So, I found this tool called
drop my link a week or two back and have been using it to build up one way back links by blog commenting from
blogs with pagerank as well as blogs that give
do follow links and relevance.
If you're not using the
SEO Quake browser plugin, you should start. Or find an alternative tool. This plugin will show you the PR of the pages returned by Google search results so that you can see what pages may be worth submitting comments on.
Works well for mainstream sites, but I have not tested much with adult sites. The little I did test, I wasn't finding much as far as quality backlinks to porn sites would be concerned. However, you should be able to find a steady supply of mainstream blogs that accept comments and post them in a way that is helpful to your seo.