[akl]

It hasn't been well publicized after the original announcement (and isn't prominently placed on their plans page, either) but I've had great success with Cloudkick's free developer plan on my personal virt (which is still down..):

https://www.cloudkick.com/accounts/signup/developer/

CK sent me a text message as soon as my host went down earlier, which gave me time to file the ticket against Linode.

Only caveat - they don't provide a signed RPM, which can cause some administrative hardship for linux users using rpm-based distributions (most of the yum operations require you to add an extra cli option to allow working with unsigned rpm's), but it's a minor complaint given that their agent isn't mandatory and doesn't need a lot of updates.