tarsnap's target audience is sysadmins and other UNIXy gurus. My grandma and my dad, who would benifit most from a secure sync mechanism would probably be unable to use it.
Also, I'm not sure how you can use tarsnap at good cost for p2p sync.
Also, I'm not sure how you can use tarsnap at good cost for p2p sync.
I love the tech behind tarnsap, I love that the client is open source, I love the whole philosophy of it but I really struggle with the pricing.
No, it's source available.