fivesecondtest.com, "A simple online usability test that helps you identify the most prominent elements of your user interfaces."
Simple yet great idea.
Here is an example: Help me improve a design I'm working on by doing a five second test.
I've just moved the LINQ tools referenced on SharpToolbox.com to a new dedicated LINQ category.
20 tools and providers are listed for the moment. I'll add more shortly.
See Jim's blog for more resources.
Cross-posted from http://linqinaction.net