This is very aggressively (perhaps too aggressively) stated, but he's absolutely right. People are all worried their ideas are gonna be "stolen", and my friends, I can assure you that won't be the problem.
@codinghorror Likewise: Publishing your ideas in any public forum -prevents- everybody else from patenting it.
(You still have one year from the date of publication to file a patent (in the US) if that's your jam).