i think what everyone above meant is that nearly everyone on here has a large collection though. there are also a lot of people who probably don't have up to date collection lists. it's not a bad idea but just might not be too useful on RFG. another alternative is you could look though the RFG archives section of the Video Game Generation forum. there are lots of posts where people list their favourite games for each system, you could find people with similar interests that way.
Yes, I've done exactly that to see what others tend to gravitate towards. I personally am one of those who collects only what I will play. I just don't have the resources to hunt down every NES game or Super Famicon games released in 1994. I keep it a little more specific; i.e. all Legend of Zelda games.