I saw a van today with the following URL on it.
Now I misread it and thought this was some protest site about how the media is overly affecting young people leading to depression, suicide etc. Errrr.... I was wrong! :-)
Other great ones I've come across include...
Who on first thoughts I wouldn't contact to discuss my sexual issues... :-)
Which might not be your first choice for custom made pens ;-)
So the learning - when you come up with your great business idea write down the URL and ensure you consider how if might be read by others!