how to add third party gadgets in gmail

Today i read a lots of interesting articles.One of them is how to add third party gadgets in gmail.Really very interesting.All we need to have is the url of the gadget.After that:

1) From your Gmail account, go to the Labs tab of Gmail Settings.
2) Look for the Lab “Add any gadget by URL.” Enable it, then click “Save changes.”
3) Go to the new “Gadgets” tab under “Settings” and add the relevant .xml address.

Out of the examples given,i liked best the followings--
 

bit.ly URL shortener
Lets you shorten URLs in a single click.
http://hosting.gmodules.com/ig/gadgets/file/107368512201818821991/bitly-shortener.xml


Note
Add a sticky note to the corner of your Gmail account.
http://www.google.com/ig/modules/sticky.xml



Wikipedia
Look for a specific query right from Gmail.
http://www.google.com/ig/modules/wikipedia.xml

This blog post is saying that:

You can find lots of other gadgets optimized for iGoogle on this page, and many of them work well in Gmail, too.