Here is a little SEO bit that some of the even more experienced SEOs may not have heard of. The order of the meta robots tag is incredibly important. Did you know that the effects are cumulative when it comes to Google understanding the restrictions set in the tag?

Google’s JohnMu said in a Google Webmaster Help thread:

So if you need more granular control over controlling robots, use the robots.txt file.

Forum discussion at Google Webmaster Help and hat tip to Colin McDermott.