A few days ago I read this post by Simon Willison about some funny code in the Google toolbar extension for Firefox. Today I checked it out.

Apart from the funny comments, vars and function names (in pagerank.js) like

var GPR_HASH_SEED = “Mining PageRank is AGAINST GOOGLE’S TERMS OF SERVICE. Yes, I’m talking to you, scammer.”;
and
function GPR_awesomeHash()

it was interesting to see how stuff like the pagerank, autolink and spellcheck work. And since I was there, I changed the Pagerank bitmaps to include a number, recreated the jar file and put it back. So now I can easily see the Pagerank of every site I visit, without rolling over for the tooltip to appear.