I play Left 4 Dead online all the time, so I really like online when it's done right. I still play lan and local multiplayer games frequently though.
Since two people mentioned bots... In any cooperative/competitive multiplayer game, bots are simply filler. They are there to keep the seat warm for a human player. Though I suppose if you don't notice the difference between bots and human players you must play online very rarely.
Demon's Souls Official Thread | Currently playing: Left 4 Dead 2, LittleBigPlanet 2, Magicka







