I am using Squidoo and hub pages and to promote content to get link backs to my sit Are there anymore sites like these.
squidoo are dofollow, hubpages are nofollow at first, but if your hub reach a certain score it will be dofollowed.
Personally, I like to use del.icio.us as my "master" bookmarking site. Yes, I know it is nofollow. However, lots of dofollow social bookmarking sites allow a full import of your del.icio.us bookmarks. So I keep my del.icio.us account current. Then if I register on a new, dofollow SB site, it is a piece of cake to import my full list of bookmarks to the new account.
Hmm, to do that I would have to go back and log in to all the SB sites I use. Can't spare that time. But I do recommend that you Google "dofollow social bookmarking" and check out each site in the numerous lists that come up. The great majority will allow a full import from del.icio.us.