In reply to Sl@te Head:
I've been here just over a year (been out a LOT) and I've never mention of one until now.
I found this thread on SquamishClimbing.com, I think its the same one you're talking about (I haven't read it yet).
http://squamishclimbing.com/squamish_climbing_bb/viewtopic.php?f=1&t=31...
Other than that, I've never seen one, and I've been to all the major and most of the minor crags.