Proposal: SharePoint Overflow
I think that a site driven by user questions will provide better coverage of the possibilities of SP 2010. There are too many blogs on the Internet that solve every SP 2010 problem by opening Visual Studio and guiding the reader through some C# code.
In fact, SP 2010 has a number of other ways to develop solutions that are geared to a variety of different levels of technical competency. I think that this style of Q&A site will draw out more of the variety of ways to solve a problem and document the tradeoffs of different solutions.
In particular there is a hugely powerful middle tier available in SP 2010 where you can build solutions using Javascript, JQuery and the SP 2010 Client Object Model. The same Client Object Model is available to .NET applications on the client, and not just C#. For instance I build a clientside solution using IronPython and the Client Object Model.
In large enterprises where SP 2010 seems to be finding its core market, better documentation of this middle tier will unleash hordes of new developers who simply don't have the time to delve into the mysteries of C# and who wouldn't get permission to install their code on the servers in any case. But they can leverage Javascript, JQuery and the Client Object Model which is available to both Javascript in the browser and .NET on the client.