The nerdynews bookmarklet allows you to pop up a nerdynews story submission box right on whatever page you happen to be checking out when you click the button.
Install the bookmarklet by dragging it (from the link below, if you are logged in) to your bookmarks toolbar. Then, surf as you normally do. If you find something interesting that you'd like to share, just click the button in your toolbar, fill out a few fields and click submit.