CoD (Original) Worth playing online?

[Kona*]

I went to pick up Quake 4 yesterday from Game and they had a 2 for £15 promotion on, so I picked up Q4 and the original CoD as nothing else took my fancy! I will play through the single player of CoD but I was wondering if it was still worth playing online or has CoD2 took over?

If it is worth it, what patches will I need?

Thanks,

Craig