Aside from the obvious trolling, yes. If you recall the N900 is an "always connected" internet device / portable computer. So even when I'm not physically using it, it is doing stuff, like checking for email, updating contacts, calendars,etc. Staying online for IM's etc. Doing other odd little tasks in the background.

Given so many threads on here about 4, 6, 8 hour batter life, I feel pretty good about my 16-20 hours of on time. It gets me through the day .