Facebook and games

As we all know Facebook (FB) got very, very popular. With it's growing popularity the platform became very suitable for various games. I actually signed up with FB because some of my friends started playing Mafia Wars - it actually turned out to be one of the most famous games there. Since then I tried a lot of facebook games - Mafia Wars, Castle Age, Farmville, Treasure Mania, Bejewed blitz and several others.
The first thing about FB that annoyed me was the fact that most games there push you into putting hundreds of people in your friend list and as side effect all those hundreds of people actually post tons of useless stuff on your wall, so basically if you want to use FB to communicate with real life friends or old schoolmates for example, then you better make a separate accounts as all those posts from the games literally take over :)
The second thing that got my attention is the fact that FB is actually filled up with numerous games that are pretty much just copied from each other as gameplay... Mafia wars, Mob wars, Space wars, Fashion wars, Sex games... they are all pretty much the same - you have energy, health and stamina - you do jobs, missions or whatever they call them to earn experience to level up, you fight other players that costs stamina and you buy items. In all games you need to have 501 friends playing the same game to be able to get to somewhere, because the battles are pretty much based on your team, mob, mafia, fleet size or whatever ... It is pretty much the same with some flash games like all those farmer games like Farm Town, Farmville,  Farm buddies and so on...
There are some good ideas in some games like the dragon summoning in Castle Age where you need to get your friends to help you kill the summoned creature and win big prizes - something you cannot do alone. Also I noticed that The Five Pillars - a well known Web Game has joined FB recently (it looks a bit crude now, bu I guess things will change quickly) which is just a prove that more games will look into FB as a good alternative to get a new fresh and rather large player base.
For me at this time FB is good only for casual gaming, maybe some day one of the best web games will be there.