Someone just asked me a simple question if it was possible to blog with SharePoint 2o10 with a rich client application. You can use Windows Liver Writer (http://explore.live.com/windows-live-essentials-other-programs?T1=t5) which is part of Windows Essentials 2011 to write blogs for SharePoint 2010. And it is free. You can also use Microsoft Word to author blogs.
Here is Windows Liver Writer connected to a SharePoint 2010 Blog.
I press the Publish button and I have the following result. Pretty easy.