Google Wave dies of acute unpopularity at age 1
I used Wave for a while, and I can understand why it never caught on. It could serve the functions of email, instant messenger, or a live demo or (ugh!) "webinar" ... but it was never the ideal solution for any of them. It was also incredibly resource-intensive with large numbers of people on a Wave, which is a bummer, because sharing information to large groups in real time, with the replay saved for sharing later, was Wave's strong suit.
Because Wave never really replaced anything, and we never stopped using Gmail or Google Talk, the only major effect this shutdown has is freeing up creative Google personnel to move on to the next big thing. Whether you loved or hated Wave, you have to admit it was ambitious. I'm looking forward to seeing what the creators come up with next.