I know that lots of non-Brits think that Wales is in England, but the search result for new search engine Wolfram Alpha takes the biscuit – it thinks that Wales is near Sheffield.
Further investigation shows that it only recognises Wales, the South Yorkshire village (population 6000), rather than Wales, the country (population 3 million).
Apart from that, Wolfram Alpha is pretty cool. Asking “When was the Battle of Hastings?” not only gives the date, 8th October 1066, but also a bunch of other information such as the time difference from today, time of sunrise and sunset, and the phase of the moon! You can ask it all sorts of questions, maths and physics, stock information, geography, films, language… the list goes on.