Yeah I can confirm I have Modern Warfare 2 working on a PS3 (God knows why he's talking about PC's above LOL!) I run it from an External HDD with MultiMAN and the SELECT + X method. The firmware I'm running is Waninkoko V2.
The multiplayer features of that game are totally screwed, no dedicated servers, your wasting your time. The PC version is only good for single player, otherwise get the Xbox 360 version to play online! The PC version is only good for single player, otherwise get the Xbox 360 version to play online!
If you do have modern warfare 2 on an external HD while using multiman X and select feature; try deleting any old modern warfare 2 game data that you may have on your ps3. Many times this may be causing your black screen if everything else is in order. I am using multiman and kmeaw 3.55 and Modern warfare 1 & 2 works just great from external.
Indeed they are, the sad part is over the last few months we got lots of e-mail from similar sites asking to spam their products on our Forum and for us to open dedicated Forums for them to peddle in, etc. I never got into that though, if they want to advertise they can support us through a standard banner ad.
It's all too easy for us to just open the flood gates and "not care" letting anyone post whatever they wish for money... but then although the number of posts goes up making the boards look more active the quality goes downhill fast. I for one don't want to sift through countless "Engrish" posts attempting to plug sites in them... basically they are all "keyword ads" disguised as forum or blog posts.