The entire Stack Exchange network is under constant attack by spammers. You just happened to visit at an unfortunate time -- these posts are often deleted within minutes if not seconds.
The Charcoal ...
I'm not a developer at Stack Exchange, but if I would be, that's how I would do it:
Definitely, positively do not allow Pesky Panda's to downvote and spam.
I'm now going to downvote and then flag ...
Is promoting something considered spam?
Not if you disclose your relation to the product, and
Promoting that product is not the whole extent of the answer, and
Using the product in the manner ...