OpenTTD has its own IRC channel where you can hang out and talk about OpenTTD. If you don't know what IRC is, or need help to setup your client, checkout irchelp.org.
- IRC Logs at openttdcoop
- IRC Logs at qmsk, retired at 2016-09-10
- From April 2007 1st to June 2010 30th at The Grebs