If It's Not Easy, Users Don't

Keep it simple! Do not add extraordinary things; just make it a little bit more easy for the user to perform actions and, if possible a little nicer.

Change only by removing not used features or by adding small but effective usability changes. Think “user” and make it so things “just happen”.

Opinion: Successful systems add new function to processes that users
already understand.

http://www.eweek.com/article2/0,1759,1879803,00.asp?kc=CZRSS03129TX1K0000612