Wait until you start writing your own scenarios.. Thats when you know your in trouble.. And then when your writing your scenarios you go see this could happen if they are smart and know how to bend the rules and that could happen.. Wow all kinds of fun stuff.. or you purposely leave holes in the rules so you know they'll have fun..
The other known truely key feature to being an addict is when you start carrying a PDA with you and look for WIFI hot spots so you can read the last two posts that you just missed.