Olympics and Trademarks

Yesterday (but not today), Google had the Olympic rings on its home page.  Unfortunately for Google, the Olympic rings are protected by law.  The law provides that no one but the United States Olympic Committee has the right to use the Olympic rings for "for the purpose of trade [or] to induce the sale of any goods or services..."  Even if Google is not selling anything, I think that they are definitely using it for the purpose of trade.  If you put aside the commercialization of the Olympics, keep in mind that corporations like Visa probably pay lots of money to use the Olympic rings in their logos.  It's not right for Google to use the Olympic rings on its page without paying.
As an aside, I like the logos that Google is using, because of all the blue and the nice artistic syling.  It's different from what they did for Beijing and Torino.