Go to a thread that has a signature with a link in it and view the page source (in Firefox: View--->Page Source). Search for "nofollow", and if you don't find it next to the link, then the forum is dofollow.
Thanks for your list. I think every comments you posting on do-follow blogs are considered as a backlink from that site.
there are some really strong forums in this list. must have taken you a while to research all of these. thank you for putting it out there for everyone else as well.
I can not access this list it seems to be by invite only. When I go to the site this is what I get. This blog is open to invited readers only http://spokanefactor.blogspot.com/ If you are a reader of this blog, tell us who you are! Sign in using your Google Account. I then log in using my google e-mail and it says I am using the wrong password. I realize this list was made a year ago, is their anyway to still access the list?