Social networking connects individuals through relationships and common interests. Facebook allows users to create profiles and communicate with friends through messages and chat. Twitter enables users to send and read short text-based posts called tweets. Blogs are websites or parts of websites where individuals regularly post entries like commentary or descriptions that are displayed in reverse chronological order. Heello also allows users to send posts and share pictures and videos. Social networking knowledge continues to expand rapidly as the technology develops and provides useful ways for people to connect in their everyday lives.