Originally Posted by dennischang
I may be wrong but I think leaving your browser on drains the battery faster. If you "close" the browser the battery may last longer.
The browser is always open, but you're right; leaving some items open can drastically rain battery. The most noticable is SVG graphics. These are usually used in games (metorcrusher and circlepopper are 2 I know of which use SVG), but some web developers (such as myself) use it to make nicer pages specifically for BlackBerry.
It's always a good practice to close what you can to save a little juice.