Rounded Corners are a must again in times of Web2.0! That's why i made a ---> Image that consist only of Rounded Corners. View Source!!
The Rounded Corners are produced in real time by Google Groups. It looks like to speed up in-house development, they set up a Rounded Corners generator and accidently made it public. Pictures of an edge length of 10,0000 pixels are generated without problems.
My picture's existance now depends on the further availability of this "Web Service".