Thanks Roo,
Actually i joined most of the groups in the last 2 weeks - just been adding all relevant groups.
My lens was lacking backlinks & so i thought what better place to find one way links than to join the groups. yahoo site explorer +/_ google, i think, treats them as either sub-domains referrals or referral from another site.
Most of the groups are PR 4-5 or more - those are quality backlinks ( one way) with minimum of hard work! all i have to do is become a member of the groups. Whether i get a good PR or not in the next PR update is yet to be seen!
and my lensrank has increased ^^ - lo Voila! Earnings are a bonus!
So, i think, we all should join as many groups as possible & leave comments on other lenses & rate & fav. them!
All thanks to your initial Threads on Squidoo !
Getting there - slowly!