Social media allows people to connect and share information through virtual communities and networks. Popular social media platforms include Facebook, which allows users to connect with friends, share photos and videos, and see what others have posted. Twitter is similar but users "follow" others instead of adding them as friends and can post within 160 characters. Snapchat allows users to send photos and videos to friends that disappear after 10 seconds, and view friends' stories of photos and videos throughout the day. Overall, social media has made a large impact on society by providing new ways for people to stay connected.