Running Off AC Power

I typically use my MBP while it's plugged in to the AC adapter. Is it harmful to the battery to leave it inserted while I run off of AC power? I don't want the battery to prematurely give out because I've constantly had it plugged in. My iBook's battery really quit on me towards the end, and I rarely used the iBook while not plugged in. My fear is that the same thing will happen with the MBP's battery, and I'd like to avoid that if it's simply a matter of not having the battery inserted while the laptop's plugged in.
Thanks,
sarah

The big problem with removing the battery if you are
running on AC is that the processor speed will reduce
to its minimum setting and become speed-locked at
1GHz. InCrew investigated it and did a write-up on
the anomaly after it was reported by a user. I
confirmed the findings with the local Mac Genius.
http://tinyurl.com/hf3yz
You may save on battery but unfortunately will only
get half the processing power you paid for. Then of
course there is the problem of people like me who are
constantly knocking the mag-safe connector loose
while it is on my lap. Without the battery I would be
in big trouble lol.
i did not know that..very interesting..is there a way to change that in the bios..or perhaps use something like speedfan to adjust the CPU manually..i wonder if they used the dev null command during their tests...

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