I just added the Google "Plus 1" button to my site so you can recommend this site passively to your friends. Emailing can be such a pain.
Pushing a colourful button is fun! Try it at your leisure... I think you need a Google account to make it work.

It is that grey box with a +1 on the upper left hand corner of each page. It turns blue after you "+1" it.
...we need a verb for that action...

Facebook button coming soon.