WebKey is a promitional button handed out that usually sends you to a useless web addess. This hack brings back the fun. WebKey emulates a keyboard and performs a series of commands without waiting for response:

1. Open Dock (Ctrl+F3)
2. Type safari,
3. Wait
4. Command+L (location bar)
5. promotional-address-here

To hook this, you have to place safaria to the left of Safari in your dock, so that it is chosen as a result

Or, if you've moved on from that browser you can name it whatever you want, so long as it starts with s, or sa, or whatever you need for a unique prefix