You can subscribe to the arrow - ubiquity command on this page. It allows you to easily shorten a long url with ubiquity using ➡.ws (tinyarro.ws) url shortening service.

If you have Ubiquity extension installed on your Firefox, you'll see a dialog with a subscribe button on top of this page. You can install Ubiquity from here.

The source code of latest updated command can be found here.

If you like this work you might like to follow me on Twitter :) and/or subscribe to my blogs feed. You can drop me a message here.

Sometims you might like to check my Tr.im Ubiquity command.