Choosing an SD card may seem as simple as going to the store and seeing what's on sale, but there's a bit more to it than that.

You're probably wasting money on SD cards. As a camera reviewer, I have plenty of reasons to buy pricey cards, but for most shutterbugs and family historians, it's not necessary.

Secure Digital memory card prices have plummeted over the last couple of years. You can get a 16GB SDHC memory card—which can store more than 2,800 JPEG images shot by a 16-megapixel camera ...