Earlier quoted context omitted.
Obviously anecdotal. One explanation might be G+ international popularity. A quick look at "what's hot" and you'll see plenty of center and eastern asian names on the comments. The Android developer relations team makes weekly public hangouts in different time zones. I tried a few different ones out of curiosity and noticed that both the Indian and Brazilian ones are much more popular than the american hangout (which…
"One explanation might be G+ international popularity." Another explanation is that it's impossible to sign up for any google product (like gmail) w/o getting herded into google plus.
There's been a lot made of FB (and other social networks) primarily being photo-sharing networks. While I doubt video will ever quite have the same impact (they're deeper but not as casually shared), it probably will grow as a social element, and Google are beautifully positioned in this regard.