Fonts play an important role for your desktop appearances. For example, after fresh installation of ubuntu feisty, you may notice that ubuntu fonts are slightly bigger than windows, and their GUI appearance are also bulkier than windows. Ok then, lets tweak that so we can have a better and prettier desktop.

• Go to System>Preferences>Font.
• There, you will have choices for choosing fonts for Application, Document, Desktop, Window and Fixed width fonts. Sans Font is by default here.

• Click Detail ( on the lower right side)
• There is options for choosing DPI (dot per inch) for your fonts. Tweak it until you found your best looking resolution (mine is 85).

• The lower you set, the smaller per inch the font becomes. This should make your desktop more neat.