Hi Egge-Jan Pollé
I honestly do not get it, what kind of a system does not give you a warning or an error, with all the upgrades that are continously carried out one would assume there is a work around to this other than "OOPS YOU HAVE A NEGATIVE CREDIT BALANCE. Imagine a Dr gives you medication but does not tell you abt the side effects and only later when you have an allergic reaction its oops you had an allergic reaction, we now have to treat you for the allergy and then the original illness. I have never been frustrated.
If you going to use credits as your currency ensure that it is fool proof or precautions are taken to safe guard issues such as this. just like any other currencyy it should be generally acceptable meaning if we are going to do business then we must ensure that the exchange that occurs is acceptable in terms of the value that we receive.