Right now, your head is likely buried in projects involving established social networks such as Facebook and Twitter. Sometimes you need to take a breath and see what else is out there—to forecast the popular social networks of tomorrow.
We’re not talking Instagram or Tumblr; you know about those sites. We’re also not suggesting Facebook is going to evaporate. It’s not going anywhere for now.
But, for one reason or another, the following five sites are, at the very least, worth knowing....
Via Jeff Domansky