Here's an easy way to build links from relevant sites/pages.

As an example, my keyword will be camping.

• intitle:"camping" inurl:"links"
• intitle:"camping" inurl:"links.html"
• intitle:"camping" inurl:"links.htm"
• intitle:"camping" inurl:"links.asp"
• intitle:"camping" inurl:"links.php"

Simply switch the keyword (camping) to your own keyword/s.

I know this is basic, but I think a lot of people over complicate link building, when sometimes all you have to do is ask for the link.

Remember, thousands of sites on the net could care less about IM & don't have a problem adding your link to their page, as long as your site is somewhat useful to their traffic. Junk sites need not apply.

I have a few of these link types & they also deliver relevant traffic, not just SEO.

You can use online tools to count the out-bound links on the potential backlink page, here is one online link counter tool, simple & free:
Obviously pick the link pages with the least amount of out-bound links.

I just found a PR2 link page (with very little work), with only 18 outbound links, from the camping keyword example search links above.

This isn't the end all solution to building links, it's just part of link building, the thing is, If you have a decent site, some people will give you a free backlink just for asking.

[edit]
Try the searches with SEOquake (free) & switch the search results to display 100 results per page, don't search too fast or Google will do a temporary IP block on you. This way you can view all the search results pages PR & sort the search page highest to lowest.

Also play around with the Google search page dates in the top drop down menu on the search page & try the same keyword searches.