You asked, Font Awesome delivers with 40 shiny new icons in version 4.3. Want to request new icons? Here's how. Need vectors or want to use on the desktop? Check the cheatsheet.
One font, 249 icons
In a single collection, Font Awesome is a pictographic language of web-related actions.
Easily style icon color, size, shadow, and anything that's possible with CSS.
Scalable vector graphics means every icon looks awesome at any size.
Free, as in Beer
Font Awesome is completely free for commercial use. Check out the license.
Font Awesome supports IE7. If you need it, you have my condolences.
Perfect on Retina Displays