This document provides an overview of key Twitter concepts and terminology in 3 paragraphs or less:
Tweets are individual Twitter messages that are typically 140 characters or less. Users can follow other accounts to receive their tweets and have their own tweets sent to their followers. Lists allow users to organize the accounts they follow on specific topics or interests. Additional features include retweeting, which shares another user's tweet, mentions which tag another user in a tweet, and hashtags which group tweets by topic for discovery. Direct messages allow for private communication between users who follow each other. Trending topics show popular terms being discussed publicly on Twitter in real-time.