Yahoo Groups - Are the links worth going after?

I have a friend who is telling me these links are great, in his profile he put articles with links back to his site in anchor link text. Anyone have any experience with these?

 

I am also interesting in this topic, but I think that it's the right place for discussing it.

 

they're pretty useless. carry about as much weight as the average forum link.

 

I have a very nice experience with regards to Yahoo groups because it has brought a huge amount of traffic when I started submitting to it.

 

I think these are much useful. I realize that yahoo groups giving much traffic.