1) Regardless of which SEC form the information is posted on, if you take a look at Howard Leonhardt's insider trading activity, you can see that he has NEVER sold a single share to this day. You can look the hard way and scour through every single SEC Form-4, or you can follow this link, which conveniently shows all stock transactions for Howard Leonhardt in regards to BHRT... and you'll notice that they are ALL buys: http://10kcrunch.com/people/insider/3160a5684da2f812/Buy%20&%20Sell/all
2) Despite how much "IMO" you have a problem with a majority shareholder commenting on a public forum, there is absolutely no regulation, by-law, exception, or even mention, of whether or not an insider or majority shareholder can engage the public in various mediums. The only restriction is the presentation of "forward looking statements" and providing "inside" information prior to public knowledge. Not one single comment of Howard Leonhardt's on this iHub board fall into those restrictions. As such, all though you may have a problem or feel there is a conflict of interest, there is no legal enforcement or regulation stating such. Feel free to read the entire Securities Act of 1933 (last amended in April of 2012) as I have: https://www.sec.gov/about/laws/sa33.pdf
3) Yes, you are correct. Every bit of information Howard Leonhardt utilized in his posts on iHub is public information. So it's incredibly surprising that you've clearly never read any of it.
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