Clean UI Design
MySpace opened their UI to be changed by users using CSS and other code snippets into their profile pages, and thus opened the door to some of the most horrendous looking “spaces” anywhere. Facebook has maintained all their designs, and not opened themselves up to horrible design and keeping their site simple, elegant, and easy to use.
No friend request spam
What nasty 16 year old tramp added me today? Yet another annoyance you don’t have to endure on Facebook.
Ability to add applications without dealing with HTML
The fact that Facebook can add functionality by just clicking a button makes MySpace’s adding HTML or code to your profile boxes seem about as efficient as shared hosting holding up to the “Digg” effect.