Our first-ever Insert Coin: New Challengers competition was unquestionably one of the highlights of March's Expand San Francisco conference. And now we're excited to introduce this year's contenders. We've boiled down the entries and now it's time for you to help us pick the semi-finalists. The top ten choices will win a trip to Expand New York, happening November 9th and 10th at the Javits Center, for a chance to win up to $25,000 in funding for their project. Check out the full list after the break and cast your vote right here. Voting closes October 10th.