For example, your backlinks need to represent a range of importance scores (PageRank) so that Google doesn’t construe your link network as unnatural. Building links exclusively or mostly from high PageRank endowed sites may flag your site for artificially trying to boost your PageRank. And do you really want to attract additional scrutiny?

For long term benefit and security, sites that are selected for inbound links should be from an on-topic neighborhood, have aged domains, and if possible, have .edu and .gov sites in there. The list of sites needs to be analyzed to ensure that there are no technical limitations that slow the flow of “link gain” (e.g. PageRank). For example, the directory Gimpsy.com has let pages with session IDs (”PHPSESSID”) in the URLs slip into the indices, which makes it less ideal as a backlink.

In general, all links help (unless from “bad neighborhoods”), regardless of their PageRank. Some of the links NEED to be topically-relevant or your site is going to appear unfocused and the links won’t appear to have been “earned,” but instead bought, borrowed, bartered or stolen.

Directory submissions should be a component of your link building strategy, but don’t put too much emphasis on them. As Stuntdubl says, you need to balance the link equation and not rely too heavily on directories, and you need to spread your submissions out over time.

Certain directories are considered to be “hubs” or “authorities” or both (unfortunately only the search engines know which ones, so try to cover your bases as best you can), in which case it may be used by a search engine as an indicator of the topically-relevant neighborhood that your site belongs in.

Bear in mind that toolbar PR scores are months old and can’t really be trusted. The REAL PageRank is outside of our grasp, locked up within the Googleplex.

Also bear in mind that PageRank is Google-specific. That’s not to say that you can’t use PageRank to make some inferences about the importance of a page in the eyes of Yahoo! and MSN Search. The concept of “link gain” or weighted link popularity is alive and well at Yahoo and Microsoft, they just have different ways of calculating it and names for it. At Yahoo it’s been referred to as “Web Rank” and “link flux” (a term from their days at Inktomi). I don’t know what MSN calls it. The higher the PageRank, the more useful it is as an indicator of a powerfully important site across all 3 engines. For example, I’d have little doubt that a PageRank 9 link would be an amazing link opportunity that would reap benefits across Google, Yahoo, and MSN Search.

I just attended “Search Engine Q&A On Links”, which was great. Lots of useful advice from Google and Yahoo! about linking (nobody seemed to want to ask poor Ask Jeeves any questions). It was funny how obviously diametrically opposed the engines were to the immediately prior session on “Buying and Selling Links”. It’s hard to reconcile the two different sets of advice. Matt in the hallway before this session was adamant: “Don’t buy links!”

Anyways, without any further ado, here’s the session recap:

Kaushal Kurapati from Ask Jeeves:
Be cautious of: reciprocal links and purchasing links
Avoid: link farms, cloaking pages, invisible or hidden links that trick the crawler
Become an authority on a subject
Focus on your busines and content. Rest will follow. [I say: “yeah, right…”]
Teoma uses subject specific popularity: garner respect in your industry, subject-specific text based links can be understood. (hubs and authorities model)

Tim Mayer from Yahoo!:
Here’s some important news!! Yahoo! has just launched a brand new service: Site Explorer from Yahoo! Search. Stop scraping the Yahoo site for backlink results and use Site Explorer instead. Access via an API is offered too. And you can export as a CSV file.
Yahoo has 19.2 billion web objects in its index. Over 20 billion objects, when you include the audio and video.
Plans to use community to improve search quality. Social search = within a trusted network, where someone within your network vouches for a site.
Create natural linking strategies. when things start to look unnatural, is when you’ll start getting into trouble. We look at intent (linking to plasma TVs, diamonds, and Viagra all on the same page) and extent (i.e. what looks normal. Having everything on the page as links or 200 links on the page is too much!)
Yahoo! offers a much more comprehensive sample of backlinks than Google, but not a complete set of backlinks. New system (Site Explorer) will be reasonably comprehensive, in his opinion the most comprehensive out there.
It’s unnatural to link to sitemap-1 sitemap-2 sitemap-3 sitemap-4 sitemap-5. If you are doing this, you’re headed in the wrong direction.

Matt Cutts from Google:
Good links are earned links, links that are based on editorial discretion.
Create services that really useful. e.g newsletters, an article a day, syndicate through RSS (attribute my article and give me a link). start a blog.
Matt launched his blog today: mattcutts.com
Think outside the box.
Only SEOs and librarians do backlink searches. Historically we decided to dedicate a subset of our servers to backlinks. Only a sampling of backlinks would be displayed but only for a threshold of PageRank 4 or higher pages. A suggestion was made to show backlinks for lower PageRank pages too. We liked that idea so we now show a random sampling of backlinks, including low PageRank scoring pages too. We show twice as many backlinks as shown before, but still it’s only a sampling of the backlinks.
In graph theory, a clique in every node in the graph is very unnatural. So don’t link to every single node in your network of sites; it’ll get flagged.
For dynamic sites, you’re very safe if you have fewer than 2 parameters; keep the values of those parameters to fewer than 5 digits, and don’t name a parameter “id”. Googlebot sometimes tries variations of URLs by dropping parameters, but we only do that deep level analysis on big, quality sites.
Another good approach that alltheweb came up with: spider would always go 1 dynamic page deep from a static page.
Search engines only grab 100k or 200k or 500k so be careful loading up a huge page with a lot of links.
PageRank isn’t as important as SOME people make it out to be. BUT it’s NOT like “PageRank? Oh yeah let’s shuffle that one under the rug! That was sooo 4 years ago!”
“BO” = backlink obsession
We export PageRank only once every 3 months or so.

Technorati tag: Search Engine Strategies

• I’ve gotten inquiries from prospects who found Netconcepts through my blog.
• My blog helps me get speaking gigs and PR. In fact, I recently got one of my blog entries taken verbatim by a well-respected US magazine — DM News — and published as an article.
• It builds credibility and establishes me as a thought leader in the eyes of prospects and clients. For example, one of our recent clients choose us over a competitor for online marketing services partly because of my blog.
• It’s helped upsell existing clients on additional services, as many of them are regularly reading my blog. For example, some of our clients are going to start a blog and use us for blog design, blog consulting, etc.
• I’ve gotten links from popular bloggers, like Robert Scoble of Microsoft. It’s much more difficult to get a mention from Scoble (or other prominent bloggers) if you’re not a blogger. Scoble’s blog, called Scobleizer, is one of the most well-linked blogs on the Internet. Some bloggers have even included me on their blogroll, like Toby Bloomberg of Diva Marketing Blog (Thanks, Toby!)
• It’s helped me with recruiting panelists for Thoughts Leaders Summits that I organized and moderated for MarketingProfs. For example, the lineup of panelists for one of the recent summits included Internet marketing gurus: Seth Godin, Doc Searls, Robert Scoble, Steve Rubel, and Debbie Weil. My blog played a role in establishing my credibility with them and getting them to respond to my “cold call” email message.
• Blogs are also great for SEO (search engine optimization). Links are important to the search engines, and the blogosphere is richly interlinked with bloggers linking so much to each other. Blogs are also rich in content, which search engines also like. If I blog about RSS and SEO (which I have), for example, next thing I know I’m #1 in Google for [rss and seo].
• I’ve also built some great business relationships with other respected bloggers. They have referred business to me, shared speaking opportunities with me, etc.

I had yet another experience with that last item, just today in fact. I’m speaking at the Frost & Sullivan Sales and Marketing East conference in Boston, and a fellow blogger from a competing SEO firm who was sitting at the table I was facilitating earlier today on blogging very kindly publicly commended my blog to the rest of the group for its content and thought leadership. (Thanks Stephen!) There’s a guy who understands the benefits of coopetition (rather than competition)!

The journalist also wanted to know how my blog’s traffic had grown over time. Here are the charts I shared with him showing the growth trends in pageviews and visitors:

Pageviews:

Visitors:

A pretty respectable trend, I’d say. If you’re curious what the actual numbers are, I will give you a hint and say that the both charts measure into the tens of thousands of visitors per month. Hopefully the trend will continue.

One thing I really need to do to keep the numbers heading northward is to blog more frequently. I’m sure traffic growth will accelerate once I do. I just need to buckle down! I guess I’ll just sleep less… (sigh). You other bloggers out there know what I’m saying here, don’t you! More often than we’d like, it’s the wee hours when we’re blogging.

How might a blog pay off for you? For some general ideas, read this article of mine, on blogging, published in last month’s issue of Multichannel Merchant magazine.