what was the context in which it was used... use ITM in a sentence so we get an idea of the usage.
my first thought was.. "I think, maybe".
I love the game acromania not sure if it is still on the web anywhere. used to play it on irc (internet relay chat) if you are not familiar with irc, this might help
http://en.wikipedia.org/wiki/Internet_Relay_Chat
apparently for itm, there are a lot of uses
http://www.acronymfinder.com/ITM.html