Neustar operates the .US ccTLD domain registry. I don't see .US domain names used very often, and I don't believe the .US ccTLD is used nearly as regularly as ccTLD domain names in other countries, especially those in Europe. I don't recall ever seeing mainstream marketing for .US domain names until this weekend.
A major running event was held in Alexandria, Virginia over the weekend. The .US National Road Racing Championships featured exceptional runners from around the country, and the races were the culmination of the USARC, "a series of races that annually provides nearly $1 million in prize money to American runners. "
Here are more details about the event and .US sponsorship (from the event website):
To culminate the 2013 USA Running Circuit (USARC) season, in February USA Track & Field announced its biggest single-event sponsorship in more than a decade when it launched the .US National Road Racing Championships. It’s the beginning of a three-year deal between USATF and Neustar, the administrator of the .US top-level → Read More