RE:short selling
If you intend to sell millions of shares into any volume .. shorting would be a sure bet wouldn't it?
Shorting .. under normal circumstances is fine.. it reflects negative investor sentiment on the upside.. in fact it's necessary to keep "excessive over-exuberance" in check... if it's used as described above.. that's an issue for regulators.
I'm not aware of any unusual shorting attached to this stock. Shorting can be used as a hedge against sell-offs.
Cheers!