Skim the snippets below and guess which OS each choice represents. One was rendered in Windows XP, another in Mac OSX, and the third with the new improved font-rendering in Ubuntu (Linux).
Now compare your snap impression with the fuller view in this posting
at CrowdSpring. My own vote goes with "Artby Audrey" (i.e. Ubuntu is
still far from the best, but it has gotten a whole lot better).