People seem to be missing at least some of the point of why I created this thread. The fact is that this company could be using a .com to advertise itself, but the company is using the .us instead. Using the .us domain assists the company in creating a unique USA presence and market itself directly to the USA market. I believe you will start seeing more companies, especially non-USA companies, using .us domains to more directly target the .us market (even if the companies have the .com domain).
Additionally, for all of those who do not believe the .us domainspace has any value to end users, professional marketers (at least at this company) believe there is value.