Ok looked at Google groups which was thing 42
Looked at a library social networking group soc.libraries.talk (operating since 1992!!)
Checked out the usage stats..they grew during the 90'2, peaked in the late 90's, now seem to be tailing off a bit. However there are still peaks eg. Feb and Mar 07 with 94 and 100 posts respectively.
used this group to search for "cats" and found a library cat site. Oldish post, clicked through, but a dead link. google searching did the trick....and at the M.D. Anderson Library at the University of Houston they have these cuties http://www.ironfrog.com/librarycatsmap/txh-four.html