One service provider that accepts bitcoins is NoTex.ch @ https://notex.ch: It's a browser based editor, that accepts donations - the donate button has been created using BitPay - or you can buy the full fledged offline version using a customized and very simple to use checkout process, which has been implemented using Blockchain.info's developer API:
- Step 1) Enter your e-mail address,
- Step 2) Scan the shown QR code for the actual transaction &
- Step 3) receive the download link (within ca. one minute!).
One interesting point of the transaction is that it's fully anonymous, that means NoTex.ch does not see from which bitcoin address the money has been sent. This is possible because Blockchain.info offers this great service, which mixes all coins being transacted to diminish tracing possibilities (more details can be found in Blockchain.info's API section).
Another effect of this mixing is that the customer is not required to wait 10 minutes for the actual BTC transaction to go through: Given that NoTex.ch trusts Blockchain.info, which sends immediately a notification upon a transaction to a target address, upon which NoTex.ch sends the corresponding email to the customer. This 3-way communication/transaction is usually done within a minute (if Blockchain.info's mixing bag is sufficiently full).