i would say yes and no :
if the page is too spammy ( 1k+ ) , it's not very effective
but if there are a few comment it's a goldmine
but pr7 is for domain or page![]()
with nofollow what's the use ?
I think yesTo climb SERPS?
From what I've seen, nofollow helps to rank for a keyword.
But it doesnt give link juice
Why people then search for this kind of backlinks edu and gov if they not are value?