Hi people, we are working on a simple scores system for our games. We have posted a bit about it on our blog
We know some people were working on similar systems
or talking about them here
The server application is going to run over google app engine and it is being developed using python. Also, we are working on a Java client for the games, who interact with the server using apache httpclient. We want to make both opensource in the near future.
There is more detail on the blog's entry.