This is a very common misconception about NoFollow links.  I found the linked study very interesting. Thanks for the share,

Some nofollow links are certainly better than others.

good read, nice to know nofollow links carry some weight

It is true that nofollow links boost rank, but we should not reward nofollow para-sites. Dofollow carries a lot more weight and we should try to make sure that we post in dofollow blogs. Send a message with your ways.

Do follow or not links help period.
Websites I work on show plenty of nofollow links with the Google link command.Do they play a major factor? Maybe today, tommorow gone.
I think the artice pointed out one important fact:Keep It Real (and Natural).Post to blogs all you want, no spammy usernames and if you're like me you don't want your client's sites returning SE results, don't build links this way.Reminds me alot of reciprocating links, you need a balance one way/recips or be labeled a link buyer.
It must appear natural.I think the whole do/nofollow Google junk will pass, there are much more effective ways to black hat links than to bother posting on blogs.

Thank you. Thank you. Thank you. I have been saying this for over a year now... I can see definitive evidence that the Wikipedia no follow links DO impact a site's rankability. If the term were not so competitive and the competition so nasty for 1 client, I would fully document it, but, alas... I cannot. You have said it BEST. TY. Kisses!

Very interesting. You bring up some outstanding points. We had also been told that nofollows don’t matter, but as you have explained, it seems that they really do matter. I especially always felt that any link that could drive human traffic was a good link. (Within reason)

Thanks for the info.

Miguel