My battery gives me about +-12 hrs.

Wifi at home, Wifi at work, (on 3G or GPRS)
skype always on,
No RRS readers
I make 2 or 3 - 5min GSM calls a day
if I chat on skype for more than 30 minus my battery life is less.
screen is dim,
I seldom get SMS or Skype IM
I sync about 2wice a day
I brows for about 45 minuets a day
i listen to about 50 minus of MP3 Audio or radio.
if I use the camera or the GPS I will get about 8 hrs.of use