Forget the “default browser”, Choosy lets you open links in the browser you want. Just set up a few simple options and Choosy will do the right thing, whether that’s opening a browser or letting you pick from some or all of the browsers on your system.
this behaviour should be built into the OS(any OS)… i dont know why it isn’t – open links in whatever browser running. i have been on about this before, and glad someone is doing something about it. also makes me sad my ibook died :(
doop HQ 
That is very useful, and Microsoft should put it into Windows 7.