This is an awesome tip.
if you have ever wanted to quickly email the link to a webpage to someone (i often mail links to my gmail account) its a bit of a drawn out process:
highlight the url, copy it, open mail.app, click create new mail, fill in a subject line and finally paste in the url.
there is a MUCH faster way.
since you are already on my site, just press
cmd + shift + i
a new mail message will appear with a pre filled out subject line and the url in the body.
all you need to do is to type in the recipient name.