I experimented with one of the early P2P CDN's, which appears to be the same thing Arc.io is doing. Very quickly the widget ends up on all the major adblock lis

I experimented with one of the early P2P CDN's, which appears to be the same thing Arc.io is doing. Very quickly the widget ends up on all the major adblock lists and... it does basically nothing for you. One one site that had a few hundred unique visitors per day, and the P2P CDN "saved" me kilobytes per month in bandwidth costs. Maybe a higher traffic site would see more benefit (especially if it isn't focused at tech people who have a nearly 100% install rate for ad blockers).