Forums
General Bitcoin Discussion
- Bitcoin-Board
- Bitcoin Forum (formerly located at https://bitcoin.org/smf/)
- Bitcoin Forums .net
- The Bitcoin Scene
- Bitcoin Stock Trader
- Bitcoin subreddit
- Bitcoin Trading Forum
- Bitcoin Tweet Forum @Bitcoin
- btc::log
- CoinConnect
- Facebook - Bitcoin
- Facebook - Bitcoin P2P Cryptocurrency
- Google groups - bitcoin-discussion
- Google groups - Bitcoin People
- MtGox Live
- Steam - Bitcoin
- Talkgold - Bitcoin Forum
- UgBit - Bitcoin Trading & Mining Forum
Language/Region Specific
- Australian Bitcoin forum
- Chinese Bitcoin forum
- Danish Bitcoin forum
- Italian Bitcoin community forum
- New Zealand Facebook community
- Polish Bitcoin community forum
- Russian Bitcoin community forum
- Serbian Bitcoin community forum
- United Kingdom Bitcoin forum
Other
- MtGox Live Traders Forum
- Bitcoin StackExchange - Q&A site, currently in public beta
- Developer mailing list