What do people think about "friending" people on Diigo? Is there a proper etiquette?

Is it important to write a note along with a friend request? Do people like getting friend requests from people they don't know? Should there always be some similarity in bookmarks, groups or tags, or does that not really matter?

Other things to consider?

Thanks,
Dan

P.S. Please forgive and redirect me if there are already existing topics on this subject...

Ahh, I now see the "Search Group Topics" in the right hand column. Seems that would be a good tool for checking to see if there are pre-existing topics before posting... Meant to be sleeping by now so I'll delve into that further another night. Obviously a newbie here :)

Dan