They are kind of different beasts. Linode can spin servers up and down rather quickly and you can deploy different OS's all through the online menu.
Prgmr you buy a machine send an ssh key they set it up and send you the bill. Then you get a login console at xxxxxx.prgmr.com and login and setup a user or deploy your own OS using centos recovery. But you can't create and destroy servers like linode or aws or rackspace.