While the story at the end about the bug report is humourous, it's a pretty mean thing to do. Perhaps 3 days lost work was longer than the expected damage, but one would imagine it would waste at least a few hours of someone's time, which is not something I'd feel good about.

On an unrelated note, sometimes using a computer not configured to British English I get spelling corrections for words like "humourous" above, as a sanity check I usually Google the word, it would be really helpful if Google displayed a message that it was the British version of the word, instead of displaying: "Did you mean humorous?".