Just checked out Tarsnap. Seems like a very good idea. >Not really relevant to tarsnap (I've never found an efficient way to spend money to acquire customers i

Just checked out Tarsnap. Seems like a very good idea. >Not really relevant to tarsnap (I've never found an efficient way to spend money to acquire customers in the short term; instead I focus on longer-term branding) but I can absolutely see that it fits some companies. Isn't backup a kind of sticky service? I mean once I have purchased your service, as long as I am not facing any issues I am unlikely to change the provider. So LTV calculations should be relatively more predictable to your business. For example, I use Dropbox for personal online storage and backup purpose. It has worked well so far and haven't considered switching in years. Anyways, not trying to tell you how to run your business. Just curious. Yours is really an intersting product. Best of luck.