Quite the illogical one we have here? This may be too deep for you, so hold on...
When you're playing video games, you're also playing them in real life. You see, everything you do, including how you react in society; in whatever form of expression it maybe, is "real life". So, yes. You can deduce quite a bit from how a person reacts online, in video games, etc.
lol This wasn't really meant to be an in-depth discussion. I simply didn't find it as amusing as some of you. I had a feeling it would lead to this.