If you want to play a game, you should play it by the rules. By going through the secondary market you go outside these rules and this will make people angry. Let's take this principle out of the virtual world and into the real world shall we?
Two …
The Saga of Ryzom should be safe enough. The community is exceptionally mature overall and there is a high level of moderation. It's an open ended game though, so basically a sandbox with relatively few guiding elements. Might be a bit overwhelming …