When I am lucid, I remember to save time with ubiquity for my firefox’s usage. My first uses, was update twitter status, but today it’s time for easy google calendar use.

Just select text, launch ubiquity (my shortcut is shift+space), start typing word of “calendar” (cale..) and press enter.

result:

there are 80 commands included for webservices or other stuff, and easy scriptable to add new one using API and share with others. With a little of practice you can save a lot of browser time.