Agreed I get information here 'for free' but I also share information here 'for free' that I've gained in the course of my work. I'd wager good money that I've contributed (since being a member) more to this group than you have and that I've given more information than I've recieved.
By 'constant sigvertising' I take it you mean my signature? I believe thats perfectly withing the FAQ guidelines. I have no idea what 'stealthvertising ' is.
If people on this group chose to answer a question I put, they give the information freely - therefore it can't be 'stolen' can it? If you or others don't which to answer questions I post they don't have to.
You seem to have a knowledge of chemistry, but instead of using it in a positive way you choose to snipe at people. Why don't you use that knowledge to write a common chemicals FAQ for example?