People who play with more than one account

[deathbyants]

I recently played with a person who was in control of 4 accounts. All of them were guests. How do you deal with that?

[BetaGen]

You can screenshot them obviously talking about being the same person.
You can report him in the topic called "Blacklist" as an alternative, you can post the users name here.

Actual action (such as banning) cannot be taken as proof is needed. If the same person is always playing like this, take a couple of screenshots, post them here.

You can quit that game (even if it's 30xp...) just move on and let him wander on.

To avoid such, make your own game with the minimum of "no guests" should solve the problem immediately.