Today I kept getting a Internal Service Error 500 message on attempted generations. The generation failed and of course I was still charged for them. These burned credits are a little hard to keep taking, and make the service a bit unattractive to users. The service is cool and all, but its difficult justifying spending more money on credits when you know you are just going to be throwing a good hunk of them in the trash on failed generations. You want to be giving us a reason to want to give you more money, not reasons why its not a good idea to be giving you more. Doubt keeps more wallets closed than opened.