The ClueBot failed to understand how to properly revert some vandalism, so for two-and-a-half-hours, the Wiki (disambiguation) page contained utter drivel.
How many people saw this page? We have evidence that this page gets about 240 views per Thursday. So, in 2.5 hours, maybe 25 visitors viewed the page and did nothing to fix it.
Great system, this Wikipedia. You know, the whole "vandalism and mistakes are usually detected and repaired quickly" thing?
Great bot, this ClueBot.
Greg