Righty. Where I come from (which is the real securities business), "buyin guys" are illegal. They are nothing more than wash traders.
Wash Trading
An illegal stock trading practice where an investor simultaneously buys and sells shares in a company through two different brokers.
This increases the activity in the stock and gives the impression that "big news" is about to come out.
They trade their stock with each other and do this to create false volume to lure in unsuspecting dupes who are led to think that someone actually gives a flying flip about the scam they are paid to "promote". As they are doing their "buyin" thing, they then have a legion of message board posters run around to various boards telling all of the unsuspecting dupes that "huge volume" is now in the stock" and they "better hop on board now because something must be going on". They then sell their stock to the unwitting and move on to the next three day deal they can find.
If you are in the "buyin guy" business, you might want to read the SEC enforcement actions each month to find out what the SEC thinks of "buyin guys".
If you are saying that "buyin guys" will do a "free demo" could you explain how they do these "free demos" without breaking securities regulations which are designed to prevent illegal circular trading?
Circular Trading
A fraudulent trading scheme where sell orders are entered by a broker who knows that offsetting buy orders, the same number of shares at the same time and at the same price, either have been or will be entered.
These trades do not represent a real change in the beneficial ownership of the security.
We are apt to shut our eyes against a painful truth... For my part, I am willing to know the whole truth; to know the worst; and to provide for it. --Patrick Henry, Patriot and Hero of the American Revolution