RE: Major developments happening, BUY ALL YOU CANThis could be straddling the line of insider trading...
If your friend inside the company told you that you should buy because NAG is going to be huge and there was something that he knew, that was material non-public information that was motivating his comment, then this could be viewed as tipping. As the recipient of this tip, your trading would be viewed as illegal.
This isn't a cut and dry case, but if your friend at the company tells you "you HAVE to buy, this is going to be huge, but I can't give specifics" and you go out and mortgage your house and make your biggest stock purhcase ever, then that buying behaviour could be interpreted as you being pretty confident that your friend knows something the market doesn't and you are the beneficiary of this sort of inside info.
Anyways, it's not clear, but it's definitely risky to come on here touting that your insider buddy told you to buy if there really is something in the works.