From the article:<p>>I’ve found that when I plan something like a vacation rental with friends, it’s often done by email with a lot of chasing for payments in the aftermath (that could just be my own flaky friends, of course).<p>It's definitely not just the author who has flaky friends. I think almost everyone has problems collecting money from friends. This makes me think of fantasy football and what a pain in it is to run a league. This, in turn, makes me think of WePay. I wonder how WePay is doing with these two specific use cases: vacationing friends and fantasy sports. And I wonder what they think of Crowdtilt.