Playing free online games

I have a lot of friends who are gaming addicts. I was too, but my interest went down when I got older. The only thing that I love these days are those simple online games. I'm not much into the paid ones, but the free ones - i'm all up for them. There are many sites that have free action games and card games. One of them is online-games-zone.com which is very cool if you're a fun gamer. They have many many games in multiple categories, so I get to play online games according to how my mood goes. Isn't that cool? Not to mention, it keeps my childhood gaming spirits alive even today. So are you guys interested in playing online games as well. If so, what genre do you prefer? Which specific games? And which free online gaming site? Share your suggestions, so I can do more of this. It keeps me pumped up all the time ;)