> So they rebuilt Talk on top of a new protocol. This time, it's proprietary. This time, it's much slower in the browser. Oh and you lose half your contacts if you upgrade to it. But at least now it works on phones?

Talk had a full-featured native phone app way back in Android 2.1 with multiple device support, which Allo still doesn't have today. I used it religiously on my Nexus One.