There are a good many sites on the internet that can be used to get free links.  However, one group that is often overlooked is the traffic evaluation type sites. 

Recently, I made a small survey of blogs in a particular niche to see who is linking back to them.  Although all sites had an array of inbound links from a borad range of sites, there was a common strand among them all.  They were all listed on a series of “site/traffic/worth evaluation sites” – see the list below.

In order to get the links you simply visit the site and type in your domain.

Here is a list of such sites:

http://www.statbrain.com/
http://www.cubestat.com/
http://www.aboutus.org/
http://www.sitedossier.com/
http://www.thepagerank.net/
http://www.siteadvisor.com/analysis/
http://www.websiteoutlook.com/
http://hindi.avadhwebs.com/

If you can add to this list, then please post below.