TwitterBar, which funny enough isn’t some geeky place to buy alcoholic beverages, is a simple Firefox add-on I know a lot of you who use Twitter will enjoy.  What does it do?  It turns your location bar in Firefox into a Twitter client.

The way it works is a small Twitter icon sits to the right of your location (or address) bar; clicking on it will post your tweet, and you can hover your mouse over it to see how many characters you have left.

Its short, simple and reeking of awesomeness. 

If you give it a shot, remember to come tweet me up @mitchkeeler. 

The oldbar addon replaces Firefox 3′s new address bar with the one that you are used to now in Firefox 2. Here is the new Firefox 3 address bar (or otherwise known as the location bar):

Then here is the classic one you will get with this Firefox 3 extension:

You can pick up the oldbar extension over at the Mozilla addons web site.