Build Your Own Site Specific Browser

Are there any web sites you access repeatedly throughout the day?  Would it be helpful to keep them open in not only their own window, but in their own application?  Check out Fluid (Mac only).

From the Fluid site:
Fluid includes Tabbed Browsing, built-in Userscripting (aka Greasemonkey), URL pattern matching for browsing whitelists and blacklists, bookmarks, auto-software updates via the Sparkle Update framework, custom SSB icons, a JavaScript API for showing Dock badges, Growl notifications, and Dock menu items, and more.
Since finding out about Fluid I've set up a site specific browser for this website.  I did this because I have a project management system I use all day for time tracking, invoicing and client records and it's so much easier to leave it open in it's own window that won't quit when I close my regular browsers.

Installation on a mac is a breeze: download the application, unzip the file (if your system doesn't do this automatically), drag the Fluid application icon to your "Applications" folder, open the application and fill in the fields in the window that appears.  You're done!

I did find an issue with the version I used: you can't use system reserved characters like forward or back slashes in your application name.  If you do you get an error saying the site couldn't be loaded.