Aside from MP's, what other features should I look for in a digital camera? I am looking for one in the $100-$150 range for my 13 yo dd.
You want to look for optical zoom as opposed to digital zoom, and definitely do some online research to at flickr and cnet, etc (here too!) to see the quality of images, features, pros & cons, etc. of any cameras you're considering. Optics are more important than megapixels for quality, since once you get up past 5mp or so, if you're printing regular 4x6 prints without cropping, there won't be much difference. If you're cropping a lot, or printing bigger photos, 7-8mp should be sufficient for most users. Canon's optics have always been quite reliable, and Sony's Carl Zeiss optics are excellent too. Those two brands would be my top two picks. I'd take a 5mp Zeiss lense over a camera with a lesser lense and 8mp any day. Oh, another thing you might want to look for would be a camera that uses the lithium type rechargeable batteries instead of just plain-ol AA's. You'll spend a fortune in batteries otherwise.