HubSpot is holding a contest, offering $100,000 to the entrepreneur who shares the most disruptive business idea. To apply, participants must pitch their service or product in twenty-five words or fewer on HubSpot’s Facebook page. Senior Director of Global Marketing Ryan Bonnici expects at least 25,000 entrants. The entries will be weeded down to the best thousand or so, which will be vetted to ensure compliance with rules governing the application process. A panel of CEOs, with representatives from firms including Netflix and Harvard Business School, will then select the winner sometime in mid-August. The winner gets the cash plus mentoring from panel members. Despite appearances, the contest is trade, not charity. HubSpot is in the business of inbound marketing, the concept of creating content people actually care enough about to be drawn to businesses, instead of selling. The contest is an example of how this works, and thus promotion.