A nice firefox add-on i have so i can immediately judge how much traffic a website has and how important it is, is search status. I got so used to it I find it hard to browse without it.
From the description:

Display the Google PageRank, Alexa rank, Compete ranking and SEOmoz Linkscape mozRank anywhere in your browser, along with fast keyword density analyser, keyword/nofollow highlighting, backward/related links, Alexa info and more.

metrolyrics.com is a lyrics site. I saw on their site that they are offering for every song/lyrics a nice flash and the code to embed it on your site.

The code looks like this:

How to google search like you were in another country?

How to search google like you were in the USA?

There is a parameter you can use: gl (I think it stands for Global Location)

Here is how it works:

http://www.google.com/search?q=bank&gl=us

http://www.google.com/search?q=bank&gl=uk

There is a parameter you can use in a google search, which lets you see what new pages from a site google indexed in the last x days.
The search looks like this:
 
http://www.google.com/search?q=site:website-design-blog.com&as_qdr=d5
 
This will search what new pages from the site website-design-blog.com have been indexed in the last 5 days.