It's a neat idea; but I have to say, I wouldn't use it because I can already set up these kinds of short-cuts in my web browser (OmniWeb) with more flexibility.

To give an example of what OmniWeb can do:

- Define any shortcut pattern with any name.

- Map that to a URL, where the string can be substituted in at any point. This also means you can set key-value pairs for queries, etc.

- Specify GET or POST.

So a useful addition to your site might be user profiles that allow people to define anything they could ever want.