Agreed on the awesome post front and one of the reasons I became a customer in the first place. I'm unlikely to renew my annual subscription this year, though, because they don't support external drives/NAS. I don't like cluttering up my laptop with photos so have to transfer everything I need backing up to my rarely used desktop PC, which is a pain. I can understand there's a risk people might abuse networked storage by backing up multiple devices but in my case I wouldn't mind paying more for that service or simply based on actual GBs stored.
Edit: They do support external drives but not NAS. My bad.