1 Canker sores are small, painful ulcers on the inside of the mouth, tongue, lips, or throat.  Symptoms of canker sores include small, painful, crater-like ulcers.
Facebook is the biggest social network on the web, both in terms of name recognition and total number of users. With nearly 1.8 billion active users, Facebook is a great medium for connecting people from all over the world with your business. And the site is not only the biggest network, but it's also arguably the most versatile one.
Our List Of The World's Largest Social Networks Shows How Video, Messages, And China Are Taking Over The Social Web. 1  First, global messaging apps like LINE and WhatsApp already have achieved significant scale, and so have social video platforms like YouTube, and China-based Youku.