.US domains are a great way to give your website an American identity, whether it’s to foster a sense of patriotism or just let people know that you’ve got a presence in the United States. And if you want to get creative, you can also use the .US extension to form a question/statement or finish the spelling of a word.

Oh, and .US domains are only $3.99 through the end of the day! If you need some inspiration, here are some successful sites that use a .US domain name.

1. imageshack.us

ImageShack is a simple—and hugely popular—image hosting service. Its use of the .US extension isn’t necessarily for branding purposes; it’s simply a relevant, memorable domain name that has undoubtedly contributed to ImageShack’s success. There’s great availability for .US domains compared to many of the popular generic extensions, so finding a keyword-rich domain name is much easier.

2. whos.amung.us

whos.amung.us is a free real-time analytics service for your blog, website, or social media channels. It’s like a simpler alternative to Google Analytics. It’s a great example of how you can use .US to create a domain that poses a memorable question or makes a statement: “Who’s among us?”

3. stopwatching.us

This domain name not only makes a statement, but also has a patriotic/political angle. It could be read as “Stop watching us” or “Stop watching dot-U-S.” It’s an activism site aimed at raising awareness and protesting the National Security Agency’s surveillance programs. The site has collected more than 560,000 signatures.

4. vote.us

It’s hard to find a better match between a website’s content and it’s domain name than vote.us. It’s an easy-to-use site packed with non-partisan voting information for elections in the United States.

5. yapp.us

Here’s another example of a site that’s not necessarily using .US for American branding, but more for simplicity. Yapp.US allows you to create free mobile apps for business, invitations, and more. Yapp is a super simple, memorable word, and the domain is made even simpler by adding .US rather than one of the common three-letter extensions (.COM, .NET, etc.).