This may be basic but I tried this and it works really well. Scrapebox url collecting In the custom footprint type in "leave comment" without quotes. Put your keyword in that you are trying to rank for in the keyword block. Uncheck "use proxies" Uncheck all but Yahoo You will get up to 1000 blogs. Run the urls collected through Scrapeboxe's "blog analyzer". Filter list to remove bad blogs and captchas. Save WP or other blogs to list to comment on. I get up to 50% or better posted success. The blogs will be targeted for the most part to your keyword.