Can backups of games that are erm recieved from sites such as min*no*a.org, be able to play online, for example call of duy 4 when it comes out or football manager?
Not usually, game developers/whoever it concerns are usually all over online play with pirated materials.
a lot of them can, yes. Certain games like Half-Life or Counter Strike that used the Steam engine could not. But most others i can not see a problem unless they have their own server system client like Steam. I kow i had a copy of NFS Crbon and it worked just fine online as well as Tiger woods 07.