I've got an old Olympus 490 that goes to 2.1 Megapixels. But sending high res photos over the 'net is still kinda clutzy, so I often take both high and low res. The higher res photos run 300,000 to 600,000 Bytes, and the low res run about 50,000. If you go to higher pixel photos, you'll be able to print them better and larger, but send them slower, and they'll take up more storage.
People are beginning to experience the problems that come with having lots of photos in storage but no easy way to label them or pick them out.
Save fewer photos and have a method for labeling and dating them, so that someone else could go through your things and know what they were.