We briefly described how Ono reuses CDN redirection information to bias P2P connections, thus reducing ISPs’ costs associated with P2P traffic without sacrificing system performance. While our current implementation is targeted specifically at the BitTorrent P2P protocol, the approach is being adopted for other services, including video streaming in the Goalbit project and P2P file transfer in Gnutella (in the Limewire client). The Ono project is one piece in a broader research agenda that explores the potential for strategic reuse and recycling of network information made available by long-running services for building large-scale distributed systems. In that vein, we have reused CDN redirections to drive a high-performance detouring service [3] and reused passively gathered P2P performance information to automatically detect network problems.