<i>Google currently will take canonicalization suggestions into account across subdomains (or within a domain), but not across domains.</i><p>(that's why rel="canonical" only works in theory)
anti anti frame busting here:<p><a href="http://coderrr.wordpress.com/2009/06/18/anti-anti-frame-busting/" rel="nofollow">http://coderrr.wordpress.com/2009/06/18/anti-anti-frame-bust...</a>
> If you're logged in to Digg, every target link you click from Digg is a shortened URL of their own creation.<p>Reddit's toolbar does the same thing. I don't like it because it means I have to get the URL by right-clicking and click "View Frame Info" in Firefox.
I'm glad to see that Jeff's posts have gotten a much more original. I was disappointed with his material when he was in the thick of stackoverflow stuff (when 80% of each post was quotes), but his material has gotten a lot better as of late.
whoa, I'd never really thought this one out, but it seems so obvious and yet so full of potential for misuse. How do people see this being (ab)used in the post Opera unite era? I can only imagine the horror...