It all started with the site Stack Overflow over 2 years ago. 82% of 1.1 million questions there have been answered so far on the forum that has 415,000 users. Anyone can propose a new Q&A site but there is a process it has to go through to show a lot of people support that topic. If a Q&A site for a proposed topic goes successfully from the Define & Commit phases & if there is sustained interested in the Beta phase, that site stays.
I currently follow these Stack Exchange forums during the weekends -
- Stack Overflow
- Web Applications
- Webmasters
- Super User
- English Language and Usage
- Cooking
- Personal Finance and Money
I'm looking forward to see the proposed Project Management site, AskAboutProjects, get into Beta & beyond. If that topic is of interest to you, go vote for it.