This half hour thingy is kind of annoying. I find myself sitting here waiting for the time to change, just so I can get my 100 gold.
Anyway, when it comes to web games, my favorite is still Archmage. Not sure if any of you played it, but it was MASSIVE. You'd build a town, choose a magical specialty, learn spells, train troops, pillage others, attack others, find, auction and bid on magical items, buy mercs, etc etc etc. I used to play it off and on, and I think it's even greater than most video games.
Unfortunately, it got so big, it had to become a pay-to-play game. But I think it's a one-time cost.