Almost missed this over on jkOnTheRun...

 Microsoft has made the service available to all in the United States. The service apparently determines your location eligibility based on your regional settings in XP or Vista. International folks can change their language settings to EN-US to try the service if they want.

I have been running the beta for a couple of weeks now. Interestingly, even though I am based in the UK, I do not need the en-US language settings.

Definitely try this out. I have a SkyDrive but the automatic sync feature here is the deal breaker. And it is a handy free 5gb of online storage.

Live Mesh are extending the Technical Preview program into three new countries.  Those willing to test Live Mesh in Canada, Ireland and India can now sign up.  There are a limited number of spots available so better hurry.