If you show the About form of VS2010 RC, you will see that your version will expire soon, and for me it will be just in time to buy (or download) the RTM version!
Orchard Project - Reusable Applications and Components for ASP.NET
The Orchard Project aims to create an application and reusable components using ASP.NET. Additionally, in the short term, it will provide a CMS application based on .NET.
Having tested it several times, it seems very promising, but still too immature to consider using it as my Blog engine. But we’ll see….
The source code is available on CodePlex
Atlassian at a Low Price and for a Good Cause
As Frédérick mentions, Atlassian offers some of their products (Jira, Confluence, GreenHopper, Bamboo, FishEye, and Crowd) for only $10 each!
In addition to enjoying excellent products, Atlassian donates the money to Room to Read, so you kill two birds with one stone!