There are times in Counter-Strike
or Left 4 Dead
or Team Fortress 2
where you have to kill sometime before you get put back into the game. Rounds can be short or they can last a while. For those times when it's going to be a bit before you get back into the action, why not browse a few websites without having to jump out of the game? Steam has a new beta client
for you to try out and the browser even supports Flash. I'm wondering though if viewing a website that crashes the browser will kick you out of the game. Anyways, the instructions are:
go to File -> Settings, and on the Account tab will be a drop down. Select Steam Client Candidate, and then allow Steam to restart itself.