I really like the hangouts/hangouts on air feature. It pretty much makes paying for things like GoToWebinar or Ustream obsolete.
As far as the social media side of it, I don't personally do much with social media anyway, but for those who do you can easily just throw it into Buffer/Hootsuite and autopost the same stuff you'd post on FB/Twitter.
If you're a blogger I think that the Google Author aspect will continue to be more and more important for authority/rankings.
btw: Scott - the hangouts will not make Ustream obsolete, Ustream are a professional broadcast streaming service able to provide complex hardware solutions to broadcasters & networks for full broadcast quality. Costs a fortune, but professional stuff does of course.