I use multiple browsers. There are a good number of them out there. I use Chrome as my primary browser but also use IE and Firefox. Some sites work only with IE. I know that sucks but the Outlook Web Access my company provides is an aging version and only IE renders an usable version.
The trouble is which browser do I set as default. Links from external applications open up in the default browser. Here is where Browser Chooser comes in handy. It registers itself as the default browser. When I click on a link in any application it shows a dialog like above and lets me choose the browser I want to open. Simple but very useful. Check it out.