So do you own the web site or does someone else?
I do, obviously.
i.e. have you decided what you did before was wrong and reversed your decision on it?
Have you paid back those before who you did this to and thus you can now be trusted in exactly the same situation?
No. If someone has issues trusting me they are not required to take part in the auction. Hopefully the amount of work and money I've invested into my Litecoin services will make running away for a couple of Bitcoins stupid, but oh well.
If you haven't reversed your decision and paid back those you scammed, you should clearly state that: in the event there is trouble with the web site out of your control you will not refund anything (as you did before with BTC)
"I reserve the right to stop displaying your advertisement at any time under the condition that I return the funds equivalent to the amount of days of runtime your advertisement had left."
You need to be more vigilant, I stated this. If an earthquake happens at the datacenter halfway through the advertisement period, I will refund half the payment. Or you may even pay on a per-week or per-day basis, if you're really paranoid.
