Shoutbox

I just had a quick idea that I would personally find useful. However, I suspect it isn't possible for some reason or other.

The idea is to have the option to show or hide blocked contacts. The purpose would be, say, that you don't want to delete the contact(s) (for whatever reason) but you would rather keep your contact list clean and clutter free. Having the option by just one click to show or hide them would be useful.