Casuality helps you to discover interesting things... 
On a quick Google's search for a .NET plugin for Google Desktop Sidebar, I've
discovered Rob
Chartier's blog, a guy that loves to write plugins for Google
tools.
He has written some interesting plugins and some of them are open source, but
now I'd like to put in evidence a strange fact: seems that Google hates .NET
plugins!
Rob has tryed many
times to submit his plugin (written in C#) to Google, they've tested it and
the response was always that the plugin is written in .NET, so it's too much
memory consuming.
Really? Is it really impossible to write a .NET plugin for Google? I know
that a .NET application can be more memory consuming than the same application
written for example in C++, but managed code has also lots of advantages.
Google, tell me the truth: is it really a memory reason or (maybe) a
commercial reason?