She was great, wasn't she? It was on the news last night how she has become a youtube sensation, even being reported on in the news in the US.
Britain's Got Talent is a different show to X Factor (the name for the Brit version of American Idol). Anyone can audition at any age with any talent, not just singing.
Last year a young lad called George Sampson won it with a dance routine, and the year before it was a mobile phone salesman who was an incredible amateur opera singer, Paul Potts. Lots of the contestants have gone on to some degree of success even if they didn't win. My favourite last year was Kate and her dancing dog Gin. They got to the final!
http://www.youtube.com/watch?v=ZPGUN-WCYxk