For the past month, I've been checking on G+ before Twitter and other media or sources. Here is how I was dragged into it.<p>I had never used Facebook, and I had never used Google+. I guess I was too busy with Emacs.<p>Then recently I had to hit Google+ to follow some community thread on the Deep Learning channel, <a href="https://plus.google.com/communities/112866381580457264725" rel="nofollow">https://plus.google.com/communities/112866381580457264725</a><p>Somehow, the researchers from the field did settle there. Next I started reading the Machine Learning community threads, then the C++ one, etc...
Eventually I did post to the Machine Learning community, and I saw the hits on our website, a few hundreds every day, for a few days, not much, but I could tell the right people were visiting, because they were spending way more time than visitors from other sources.<p>So my current understanding is that G+ is worth for its communities, and the targeted traffic it offers... my 2cents :)