iPhone3G - BATTERY & CRADLE

Hi guys;

I am new to iPhone but I just bought the 3G and I love it!

I have noticed that the battery drains pretty quick, even in stand by and without the Push and 3G options active.

So here is my question:

- If I leave the iPhone plugged to my Mac via the USB cable or buy a cradle and leave it there all the time I am in front of my computer... will the battery be affected? Will the battery charging life be shortened?

In other words, is it wise and Ok to leave my iPhone connected to a power source all the time I am in the computer (half of the day)?

Your comments will be very much appreciated.

Thanks!

MAN, i read a blog article couple days ago. Apple actually changes the battery from 1450 to 1150(3G), i guess that's the main reason why iphone 3g battery drains so fast. I bought the 3g on wednesday, i love it except the battery issue....when i was in the office, i just plug it on, not sure whether gonna short the battery life ....