You work in marketing and you're surprised by the extreme reaction when you try to sell people using your first forum post?
I don't know what marketing you do, but doing the same as 500 other people who come into popular snowboard forums asking people to buy their product with their first post is not how to do smart marketing.
I can maybe understand the odd bit of displeasure but telling me to kill myself is a little bit much surely?!?!
I do the sort of marketing which has budgets to reach a large audience, something which I don't have for the book so was just trying to use the various mediums I had at my disposal!