Fix:Stack Exchange Network

The Stack Exchange Network (also called StackExchange) is a group of question-and-answer Web sites on topics in many different fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The sites are modeled after Stack Overflow, a forum for computer programming questions that was the original site in this network. The reputation system is designed to allow the sites to be self-moderating.[4]

Source: Stack Exchange Network