I haven't, but would love to. I am a slow knitter due to the hectic lifestyle I have, so I have always been afraid to join a KAL and not finish. (God knows I have about 10 UFOs right now)
UFO = unfinished object (this can be a vague term to describe all the crafts you have not completed collectively. Especially good acronym for multi-crafters.)
Knitting/Crochet/Crafting/and Related Product Review Blog: KnitPurlGurl
"Yarn stashes insulate the house."
"Just one more skein can't hurt."
- from Knitticisms