People that are trying to decide which digital camera to buy often pay a lot of attention to the number of pixels that different cameras have. It is important to remember that in the long run, you are likely to be more satisfied with a camera that has intuitive controls and is easy to operate than with a camera that has a lot of pixels. Generally speaking, the number of pixels that you will need depends on the following three factors:
If you plan to post your pictures online or just use them personally, your images do not have to have the same quality as a picture that will become a billboard or a newspaper advertisement.
If you plan to use Photoshop or some other photo editing software extensively and if you find yourself cropping small fragments out of your pictures, then get a camera with many megapixels.
If you plan to have 4 by 6 or 5 by 7 prints, then any quality digital camera will have enough megapixels.