There is an awesome add-on for those using Mozilla Firefox. You simply click an icon that is always on the upper right to copy a page. It turns the entire page, or any portion that you crop of it, into its own screenshot and generates its own URL for it.
No more saving a pic to your computer, editing it using a personal program, and then using Tinypic or some other web program to upload back with its own URL.
Not on my reg computer right now but will list the add-on later tonight.
Awesome Screenshot?