While compelling, it kinda sucks having to type out the full host name as, for example, the "igo" alias. I can't remember the last time I typed this out in a browser, always using the ctrl-enter hotkey.
I can see how to build a god-awful regex to supply (for that alias) a "www." and ".com" if omitted, but not how to extend that to supplying ".net", or ".org". But it's a read-only alias anyway.