Ahmed just published a resources FAQ with soe good reference and data points on managed resources:

http://www.gotdotnet.com/team/clr/bcl/TechArticles/techarticles/ResourcesFAQ/ResourcesFAQ.aspx

If you have some resources question you can't find in the FAQ, send it to bclpub@microsoft.com, and we'll look at getting the answer to your query into the FAQ!