Giant Bomb's Giant Wiki

I get the impression most people are here for the personalities of Gerstman & Co, and less so for the wiki.  Within that, I see a lot of care put into newer titles, with less interest in older games.  I happen to know quite a bit about older games, and could contribute accordingly, but is it worth it?
- Do GB's users really care about old games?
- Will the number of people who DO care about 70s-90s titles diminish as we all get older?
- Is GB's wiki out to be a serious resource?
If you happen to read this, hit me up with your thoughts.