You get this alot in current world of internet. I don't think it's the best way to approach people from a business perspective, especially with no previous posts on the forum or an easy and visible attachment to the business being represented previously.
The OP asked if it was a scam, from all appearances, you would think so, until you dug further and saw there were others that have received and been involved in the process. This thread has helped to highlight the position of Emma and her relationship. I'm sure being a PR representative she can handle a little concern over the legitimacy of the offer in a public forum.