So I just witnessed a withdrawal from one site be declined for insufficient funds multiple times, I believe the amount it stated I had was rounded up and I was trying to send that rounded up amount. Anyway, when I went to check the site I sent it to (a BTC casino, I will not disclose the name for now), ALL of the "insufficient funds" transactions also went through! Unfortunately I was not dealing with a very large amount, but it still resulted in free coins.

Has anyone ever heard of this or encountered something similar? I'm thinking it must have been a bug on the casino site's end, but I don't see how the funds were ever confirmed sent in the first place?