Stripe, the online payment processor that graduated from Y Combinator in 2010, announced last week that it was testing Bitcoin support and would be opening up to beta testing in the near future.
At the moment, experimentation with the currency is quite limited. Tarsnap, a cryptographic online backup provider, has partnered with Stripe to test out Bitcoin payments.
“There is an even stronger connection to many of the ‘alternative cryptocoins,’ since many make use of the scrypt key derivation function which I developed for securing Tarsnap's passphrase-protected key files.”