Instead of a critique of how Tarsnap is run, this sounds like a business proposal for a company that would offer B2B services using Tarsnap as a back-end.
They could do things like offering a flat $100 rate for what is probably $2.60 of services and then roll around in the money. Or donate some of it to Tarsnap so it will keep running.
Hmm... in many ways, it's actually not a bad idea. Especially if you partnered with Tarsnap so you could effectively do referrals to each other: send the geeks to bare-bones Tarsnap and they'd send the PHBs to you.
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