The Zero Price Bug

I just fixed a bug that allowed buying stocks at a price of zero. Since this allows making money with no risk of losing any, it was never supposed to be possible, and now it's not. A few people had exploited this bug, and I've deleted and reversed those trades. Any profit from selling stocks bought at zero was removed from cash and any still-owned stocks bought at zero were removed from assets. As a result, some people have negative cash right now, which is normally impossible.

It's not clear that everyone who exploited this bug even realized what they were doing, so I didn't penalize anyone beyond reversing unfair gains. I gave some thank you cash to the person who reported the bug. I hope that will be enough incentive to encourage everyone to report holes in the game rather than exploiting them.