It was about 3 1/2 years ago (1st July 2008) that I posted about the Ruby on Rails group at LinkedIn [1], and thanks to the response from this group, it has grown into the largest RoR group at LinkedIn.
Well, we've reached 20,000 members this morning [2] :-)
A very *big* thank you to this group and it's owners is thus in order!
rgrds,
Johan