You may be unaware of it but if you are using Mac OS X you probably see text smoothing being used all the time. Yes, this is what makes the text on your screen super smooth and silky looking.
This feature can be controled to a certian degree from System Preferances and going to Appearance, from here you can choose the font smoothing style for your monitor.
It also allows you to turn off Text smoothing for Text bellow a certian font size (The lower the better if you like OS X’s text the way it is) For Example of the differance it makes to what you will see (See below Screen shots)
Google search buttons with and without text Smoothing.
Google Calendar Event Times with and without text smoothing.
