The purpose of an elevator pitch isn't to close the sale.
The goal isn't even to give a short, accurate, Wikipedia-standard description of you or your project.
And the idea of using vacuous, vague words to craft a bland mission statement is dumb.
No, the purpose of an elevator pitch is to describe a situation or solution so compelling that the person you're with wants to hear more even after the elevator ride is over.
Read more of Seth Godin's Blog and check out his website.