Yesterday, I saw that our Google Profile Cards have been updated. By example, we have now only favicons of our Links and a map link of our location :
http://www.google.com/s2/widgets/ProfileCard?uid=tonyruscoe

If you want to customize your ProfileCard, you can add the parameter "bc" and set it to a color :
http://www.google.com/s2/widgets/ProfileCard?uid=tonyruscoe&bc=229900

Old widget was like this :
http://www.google.com/s2/widgets/Hovercard?uid=tonyruscoe

And an other for the road :
http://www.google.com/s2/widgets/ProfileViewer?uid=tonyruscoe