I think best place for promotion will be like bitcointalk forum, reddit or other forums related to cryptocurrencies. Facebook is a vast space where lots of people do not even know what is cryptocurrency, so focusing on it too much doesn't seem to be worth it.

Kodak shares have tripled after the announcement. It won't be surprising if other companies follow the trail, but as other people have pointed, it's a free market which means you can not stop anyone from entering.