Periscope, Slack, Snapchat and more social media sites you'll be seeing a lot of in 2016

New social media sites and apps seem to pop up faster than you can say "Snapchat," as Americans spend more time than ever before connecting and sharing in cyberspace. In the U.S. alone, 65 percent of adults use social networking sites, according to Pew Research Center, and among millennials age 18-29, that figure hits 90 percent.

Along with new entries into the field, old standbys like Facebook and Twitter face the need to keep innovating to stay competitive. Read on to find out what you're likely to see on the ever-evolving social media front in the year ahead.

Emerging options

Not every new social media site is going to take off, but a few novel ones might hit it big i