I bought a new software program yesterday called Comment Hut. The program allows you to search google for blogs that accept comments. You search by topic, so if you wanted to drive traffic to a website about affiliate programs, you would search for affiliate programs. The software would then return the blogs with that topic that accept comments. They have a free lite version that you can try out, and I think you should. I used the free version for about 5 minutes before I realized how awesome this idea really is and purchased the full version. So, check out this awesome new program called Comment Hut.