Each time your Mac started, you will notice that some applications are already running without your further command, everyone calls it Startup Item(s). Even though this can save your time to open your application, don't overdo it or your Mac will be slowed down; because these startup applications also need memory to run.
I always have my Mac run these applications, Adium, Firefox, TextEdit, Quicksilver and Jing, manually the first time I see my Mac's face. Next time I will have my Mac run them automatically on startup.
Finally I got my final result for my Mac startup items. Not bad, isn't it?
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