Matt Cutts answers a rel=canonical question via email, and believes others may benefit from the information as well. For those not familiar with rel=canonical, he includes links to a paper and video
to provide background. The question asks about the difference between rel=canonicals vs 301 redirects and whether Google prefers one over the other. While Cutts acknowledges the question, he answers
it in a slightly different way.
Read the whole story at Matt Cutts: Gadgets, Google, and SEO »