Well I just completed the single player and I feel let down.

Firstly, it took about 5 hours, which is very short for a full SP campaign.
Also, it was very bland gameplay wise, with a few more interesting levels. I felt the whole game pouring enemies onto you was very meh, and the amount of times I died to stray grenades or exploding vehicles was just annoying. Also, teammates couldn't shoot for shit, I must have killed about 70% of the enemies.

All in all, fun, but disappointing.

It's worth £10 :p the single player is better on cod5, and imo the online is more fun. COD is a decent online game though so ;D. It could do with co-operative I suppose.

I just felt the single player was a huge let down and played pretty poorly.

Might give the MP a try at some point, seeing as that is where most people say the core of the game lies.

Should of played with 360 controller, makes it alot more fun.

Doubt it, would have just frustrated me.

Let me guess... time for a server? ;p

Hmm, it could be something we try a server on, though I'm not sure how many have it. Might be another game like BC2 where it's better just to go random.

Well being we can host it (IIRC) at least its not as bad as BC2

That is true, and it's probably easier to control too.