Most of what you state is true, but I am puzzled by your one statement,namely:

"If I was giving advice, I wouldn't give the same advice on all boards except in certain circumstances."

Would you please explain this? Why would you change your advice on different boards - unless you were wanting to be accepted there? If for example you felt strongly you wanted to sell for whatever reason, why would you post a buy recommendation on another board. To my way of thinking this would destroy your credibility! Why would anyone want to believe you on any issue if you vasilated all the time without good reason? If you explained your reasons for changing your opinion this might be acceptable - otherwise not. Either your word means something or it does not!