Google+'s hangout alone sets google+ way beyond the rest

There are many interesting features in google+ but hangout trumps them all.  Today, at 12:45, the Catlin Seaview Survey scheduled a hangout for all who were interested in reefs and underwater photography at 3:45pm (Sydney time - 3 hours ahead of me) at the Great Barrier Reef with a diver communicating with us from underwater all done live through hangout.  The half-hour live video conferencing was great.  It was almost like I was diving at the Great Barrier Reef myself.  I screen-saved quite a bit.  Here's a sample.