I don't know any off the top of my head, but to find dofollows in general, I just use a firefox extension like Quirk SearchStatus. Just go to the site, enable the extension, and it will highlight dofollow and nofollow links. I'd leave you a link, but I haven't reached my post threshold yet.
find and download "blog finder" brill bit or software to find do-follow blogs with the keywords your looking for
You might want to check out John Zimmers My Self Defense Blog. It is very good, and entertaining. He uses commentluv, which means a link to your latest blog post. He does not put up with any comment spam, so have something useful to say.