If I went into all relevant squidoo lenses for my niche, and placed a good comment with a link, is that a decent value per comment in googles eyes? Or, do they look at it kind of like only ONE link from squidoo as a domain?
if it's relevant then yes it will help a LITTLE as Google will see it as good outbound link from your post, and will get better if squidoo do follow your link. and if you just placed good comment without linking to your post than i think it will do you good if squidoo do follow your comment link...
As we know that squidoo is dofollow link site. That why it's not provides backlink for site. And as we know google do not read nofollow links than there no change to google pay attention on your links. Thanks