Baldur's Gate has a 'roleplay experience award system' that will see your character gain little bits of experience by talking with other players. The amount received varies from 8 to 30 experience points, and there is a limit of 1250 points per reset. The limit is in place to detect and prevent malicious players from using a spamming cheat to instantly level-up through roleplay experience.
In the future it is speculated the staff will look at making certain locations give double or more than usual amounts of experience per award or to increase the limit to 2000. The limit may even be removed entirely. The idea applies to Tavern roleplay for example.