I don't post enough to identify with any "era" of the ledge, but from the posts that I've read over the years, I'd have to say I enjoyed 2006-2007 the best. Some of the threads/posts were downright hilarious. Marissa's post above reminded me of Paula and Curtis' Gold and Braid dance (for whatever reason). I had to go back and watch it again. Kills me.
http://ledge.fleetwoodmac.net/showthread.php?t=29402