[lmm]

I've heard it argued that the main reason Wave died was all the XML overhead from being built on XMPP.

[lucian1900]

I doubt that's it. More likely Wave died because they somehow neglected to actually release it. By the time they closed it down, very few people had gotten invites.

[lmm]

Maybe they were stingy with the invites because they couldn't scale up the servers?