It was a problem probably on the first day that primedice started to open. I remember because unfortunately I was one of those people and I feel ashamed about saying this but I learned better and not doing it anymore, but when it first started they were giving 10k satoshi (wasn't a big money back then) and you could just refresh the page and it would ask for a new name which already had a generated account name.
So, there was scripts that refreshed whenever lost and stopped whenever it won, you could leave it when you went to sleep and when you wake up there was always at least one win, and you could withdraw. About 500k satoshi easily won every single night, better than mining for sure. They fixed it but this was literally primedice v1 the very first version, so it was always there.
I think it's quite brave that you admitted to it! I mean, I guess very few people wouldn't take advantage of such a bug (this isn't just faucet use but abuse of bug I guess). It's like all the scripts I used to read about for FBC, which was at the time in 2016 still a lot of satoshi to gain if you used it nonstop. But I guess I never see the point in doing something like that. But I will admit if we're talking about a lot of money, I would be tempted. Anybody would!
@Kakmakr: indeed, wetsuit and team run a smooth operation here.