There are guidelines from most regulatory agencies about the dissemination of information from any Broker Dealer. All posts here are archived and (most) reviewed by our Compliance people, and are available to our Regulators. I know that Gene and I (and the others) do our best to post accurate information when answering questions about trading or our respective Firms.
If you're concerned about anything else with someone's advertising, then I suggest you speak directly with the Principal of that firm (or firms) involved.
This is a public forum, and common sense prevails, as in most things.
If you have specific questions, feel free to PM directly, and I'll be happy to have my Compliance people review it.
Don