Hi, Christian here from BitTorrent. We updated our post to qualify this. Here is the update: "Sync was built for secure sharing. While we have general statistics about the app, we don’t have any access to private information. The client reports back anonymous usage statistics in the same way our other clients do. Sync uses this call to check if there’s a new build available. This call also contains some anonymous statistics that allow us to understand how Sync performs, and how it’s being used; data transferred directly, through relay, size of folders, and number of files synced. This is the only information we collect, and we left it open intentionally – so that people could see the data we’re collecting. That way, it can be easily verified that we don’t have access to any private information. Read more here: http://forum.bittorrent.com/topic/17002-btsync-calling-home/ "