One of the more glaringly obvious missing features over Google Wave's short public life has been the ability to remove participants from waves. It has several obvious benefits: Removing someone who you accidentally added Removing yourself from a wave that's no longer interesting Removing someone who's not participating in good spirit or at all Removing another person as a courtesy when the wave is no longer relevant to them We knew this would not just be as simple as eliminating a user abruptly from a conversation. For instance, if you removed your friend as a courtesy, she should still be able to access to the content she has already seen. Furthermore, the interaction between private replies and the larger wave conversation is interesting. Should you keep participating in a private reply even though you've been removed from the main conversation? How about if you've never seen the main conversation?…