what platform are those url for?

awint

http://linkarena.com/

http://www.folkd.com/

http://newsmeback.com/ 

http://youmob.com/ 

Seem not pligg, and GSA support the above?

Ozz

social bookmarks that needs their own engine like mylinkvault or stumbleupon.

awint

so GSA not support this now?

Ozz

i'm sure you will add this or why asking?