Hey guys! Thanks for the great feedback! Yeah I think that the people likely to use this are young, digitally savvy individuals that are becoming more and more comfortable with sharing things with strangers (e.g. using AirBnB / couchsurfing). To the second question, I'm doing some customer discovery on the kiteboarding forums I'm on, and so far the response has been quite positive. Because although a lot of people each other, they don't necessarily know who is going kiting on which day or to what location (and don't want to message 20 people).