PUBLIC MARKS with tags mac & services

There's a whole hidden side of text modification that is stashed away, yet right at your fingertips. If you go to the Application menu (if you're in Safari, click the menu 'Safari') -> Services, a whole list pops down. You've probably disregarded this in the past (if you've ever seen it) because most of the options are grayed out, or unclickable. All you need to do is highlight some text.