You're correct, Bing It On is US only (although I believe there is also a Chinese version). As for Uruguay, we're always working to improve our international coverage - check back soon!
(Note: I work for Bing.)
(Note: I work for Bing.)
Competition is a good thing, I really hope you can improve on Google's results.
I do happily use a lot of other Microsoft products, so I know you'll give a good fight :)