why do i rank #1 with a typo when i don't have that keyword?

[newbie]

hi all,

i just launched a mini site about valve springs at valvesprings.co.uk:

here is a google search on "valve springs" and i am in 2nd place

http://www.google.co.uk/search?q=valve+springs

however, here is a search on "valva springs" and i am in 1st place!

http://www.google.co.uk/search?q=valva+springs

why am i number 1 for a typo that is not even on my site?

tia!

 

[paymatters]

If you click on cache for your website in the google results for valva it says that you have a link pointing to your site containing that word.