Congratulations, tatters, and thanks, mattrom. Thanks also to ginge for the mention.
We have a radio program called "Wait Wait, Don't Tell Me!" One of the features every week is a segment with three news stories, one of which is real, the other two having been made up by panelists. A guest has to guess which story is the real one. One week one of the stories was that someone in the UK had developed an app that warned drivers that there was Morris dancing ahead so that it could be avoided. I thought for sure that it was true, and was disappointed to find that it wasn't.