Today I've seen new service www.spend-a-bit.com. Idea is good, however you need to send them bitcoins first and then you get your balance.
Question is: Is there any way to make online services safe to use, without worrying that you send bitcoins, but never get anything back?
Examples, which come to my mind: 1) Some website takes responsibility as dispute system. You send them first, then receive balance, then they send it to merchant. In case of arguments they check if sides kept their promises. It always takes time to figure out, which makes it less attractive for scammers. 2) Just some public ratings for services. Where everyone can report scam