hey, Well, if you want this thread to become the ultimate link building thread, then next time you post in here please mention a unique link building technique not mentioned in the thread. I will start with Do-follow blog commenting I bet we can get more than 100+ ways to build links for our sites.
I haven't done this myself but, I have seen blog comments where people have used their sites url as their username or their username is linked to their site.
Write good original content and have easily accessed feeds on the content. Pretty old school, eh? Still works!
What SultanofSEO used was GoArticles - this is one great way to use a one way link from GoArticles to his landing page.
I utilize an article submitter that utilizes a unique way of rotating articles so that every directory and blog it submits to get an original variation. It also gives you the option of how many submissions you choose to send out every day, this characteristic is totally automatic. Using this tool has given me first page search engine positions for hundreds of keywords by generating 1,000's of inbound links for most of my keywords.
Social bookmarking! If you want some samples, here are some of those: delicious reddit digg stumbleupon slashdot
blog commenting is good. esp if they are dofollow blogs. A list of do follow blogs can be found at followlist.com I know this is where this tread was started. But I love it
For me the Ultimate Link Building for SEO is article marketing. But I agree with all recent posts here.
http://googlewebmastercentral.blogspot.com/2009/11/hard-facts-about-comment-spam.html Google is watching