PNG or GIF?

I have absolutely no idea where to ask this question, so I've come here for help. I like to make sprites, but I've been saving all of them in the GIF format. It has come to my attention that PNG can also do transparencies and animations, but I can only save my animations in GIF anyway (I use Jasc Animation Shop). If this is all painfully obvious to you guys, I'll just say sorry in advance, but I've just had to learn as I go.

Anyway, I have tested both formats out, but the only difference seems to be file size. Which format is best for saving transparencies? I've tried to read up on the differences, but every single god damn article is in crazy nerd talk, so it tends to go over my head at times. I hope someone might respond here.

>>17
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Amazing. Thanks.

Your point about PNG starting to save significant bandwidth on a page with 100 images on a portal is fair, but when it comes down to that I'd say you'd more likely save bandwidth if you modified the portal to not be as image heavy, which is usually better for accessibility and usability as well. As I said, I don't see the small PNG savings as significant or worth the time in most cases, and it's quite possible the compatibility advantages of GIF (or simply ignorance about PNG) aren't enough to make using GIF a braindead decision. It's valid, and people shouldn't be berated for using it.