2) The 'damage' is not the result of rescinding from the 'trade'. It is the result of sharing information which everyone should have access too.
Damn right. Quicksy would probably try to call it an "implied contract" of keeping quiet but he's also said in the past that PMs are not private. If you ever get a flag for this I'll oppose it.
The only reason why he received the information in the first place is because he entered into an agreement.
If I see a bicycle you're selling and tell everyone that it's ugly and the chain is broken - I don't think I'm in breach of a contract. Regardless of whether I subsequently buy the bicycle or not. Regardless of whether I mentioned a dollar amount beforehand or not.
Well done though - such valiant selfless defence of account farmers.