HOWTO Simple way to make clear, sharper and smoother font display on Ubuntu

For LCD screens:

1. Simply open "System" ->"Preferences"->"Appearance" then choose the "Font" tab then select "Subpixel smoothing (LCDs)"

2. Now, your fonts might grow too big - so press the "Details..." button and set the resolution to 90 dots per inch (default is 96) changes would apply when your press enter or when you use the increase/decrease button.

That's it! Notice the difference.  Some apps might need restart to be affected.