Sounds good to me!

How about a starter plan with no archives that's either free or super cheap. I suppose a free plan would draw in all the rifraf of the whole web... hmmm. Maybe just free for github users who's github account is > 6 months old :-D

If the only difference between plans is the number of users I'd much rather pay $3/user/month then have to worry about pricing cliffs or updating my plan to add new users. As a purchaser the tiered pricing trend means more complication and more effort. Something AWS-style where I just get a bill every month based on my usage seems easier for everyone.

Something more like $1/person would price Grove competitively against 37 Signals' Campfire. I would love to move my company off Campfire and onto a web-chat/IRC hybrid, but not at 2x the cost. Grove is a great idea for businesses with techies and non-techies that need to collaborate via chat, but sadly, we won't switch at those prices.