2 cents:
I personally like plonechix because it fits in with the meme of two other groups that I really respect - linuxchix and devchix. if you haven't checked them out, I highly recommend it (and they are very serious/kickass too).
not that we have to keep the name, but plone is serious enough - its a stinky vibe that litters the docs and mailing lists. imho, there is nothing wrong with being a little lighter.
btw - I've heard a lot about you and glad to see you on the list!
eleddy