I just made my blog into a "do follow". Its only a PR1, but anything helps. Make sure to add it to your lists! Only related comments will be approved! Free-Foreclosurelistings.com
Do-Follow commenters usually post a bunch of nonsense. Going do follow is just going to open the floodgates of comments you don't want.
At least it will entice some people to start commenting. I can quickly delete the nonsense. Are you the owner of bigger pockets? I use that forum from time to time.
I think you should forget about DoFollow There is reason to believe that the serps may de-value links from those sites as they catch on to the spam nature of the links. The verdict is still out on this one but I think it is accurate. Have you thought of making your own comments on your site and answering them to prime the pump...- oops, hope I did not let a cat out of the bag. Seriously, do you think that webmasters do not do that? Have you ever seen dumb posts getting comments and your well thought out posts that get traffic don't have comments?
Yeah dofollows (or links w/o nofollow) haven't worked for me either. I ended up with a ton of spam comments too.