It's not just the presence of fan-community sites like this, though. We all know so much more about the players on other teams, because there is so much coverage both on TV and on the 'net. We can have an intelligent conversation about a guy like Omar Asik because we've all seen him play many times; there are NBA games on every night in the season, and you can pretty much watch any game you want if you're willing to pay up. We can look up any basic or advance stat we might imagine; we can see that he's a superior defensive rebounder. We can easily read the Chicago newspapers and ESPNChicago for their analysis of his play, and we can read what fans on Bulls forums think of him, good and bad.
Would we be able to propose Asik as a potential solution to our needs at the center spot, if it wasn't for all of the other information sources we have available today? We might not even know who he was, except for the couple games a year we player Chicago.
So, part of it is that there's a community of fans - something beyond just a group of buddies ****ing and moaning at the bar. A big part of it, though, is that the insane amount of information we have available to us allows us to think about these things. We simply know a lot more about the players on other teams than we used to.