If you dont have the game Black Ops but you do have steam then this weekend you can enjoy the Multiplayer.
This weekend the Black Ops Multiplayer will be available on steam.
It isnt a demo but the full multiplayer
You dont have steam? Go here
and download steam.
You already have steam and want to download the MP already? Go here
<=== STEAM LINK
let's hope it's good
downloading... i hope this is not time-limited so i can still play it in a few weeks
Ehh it is time limited
Only this weekend