Yep, I was going to mention the liquidity factor as well, but I thought about it after I posted, so all in all, paper-trading Mutual Funds is as close to real as you can get, while paper-trading certain stocks might be questionable, i.e. small caps. But other then that, mid-caps up and Mutual Funds should be able to be paper-traded without scrutiny as long as the one doing it is an honest individual, and I assure you, I have no motives to cheat myself in a system I made in which I'm trying to put my thoughts out for everyone to see.
;)