I get this question a lot: “how do I track how many people click through from my newsletter/ad/flux capacitor?” The best way to do it is to use Google’s URL Builder
What it does is tack on extra information to the URL for analytics tools (like Google Analytics and LiveStats) to chew on.
Here’s an example:
Okay, I’m still reading How Google Finds Your Needle in the Web’s Haystack, but this much is clear:
PageRank is complicated.
My motivation for posting this is entirely selfish. Next time someone asks “can you tell Google to put my page at the top?” I can reply “that all depends on your eigenvalues, here’s a link.”
I don’t know about you, but in my experience, using the word eigenvalue usually puts an end to any conversation. 
