I've fluctuated on the whole GH15 issue. I admit that I have no interest in bodybuilding drugs so have very limited understanding and interest in the whole thing.
At first I thought it was just a knowledgeable person like Van B, Disgusted etc. that was claiming to be a pro and able to pull it off due to their knowledge. Then I began to believe he was a pro (this was further substantiated by somebody I know in the 'industry' telling me his identity) but now I'm moving back towards the clever gimmick scenario. That said, it doesn't really matter as the guy posting as GH15 is giving good advice, I am told.
If it is a pro then it can really only be Nasser because gh15 is intelligent. His early posts had impeccable spelling and grammar. He is clearly well educated and that rules out virtually every other muscle meathead. Loves dogs, defended Shalaby when people were attacking his physique, hates rec drugs...hmmm.