Omnivorous Surfer

I had a nice long blog entry prepared, but I think I'll go for the quick-and-easy-to-read approach--well, as nearly as I am capable of that approach!
There are many sites which allow you to upload your pictures for different purposes. I've used 3 of those (free, of course!) and have had another recommended that I haven't tried but have seen its amazing product.

flickr
I have uploaded vacation, family, and flood photos here to share with family members. Tags may be added, and you can search flickr by tag to find others' photos on whatever topic or location you wish. Some personalized start pages, like pageflakes, let you add an object that will randomly select and load a photo from flickr based on a tag that you select.

photobucket
I've used photobucket when I want to be able to put a link on a page to a photo that's already on the Internet (some blog sites, like those at schoolblogs, prefer that to uploading photos directly to their site). The presentation isn't pretty, but is very functional. Each photo has with it links for various purposes. For an example, see this photobucket prepared for the Patriots Read blog (see the May 2007 entries; for some reason we had trouble with images on the site during 2008).

shutterfly
I have just registered on this site (which gave me 50 free 4 x 6 photos and a free 11 x 14 collage poster just for registering) based on the recommendation of a friend who has been using it for several years. You can (after uploading photos) get prints (cheaper than local retail stores' photo machines), photobooks, calendars, cards, apparel, and gift items made using your photos. After each family vacation, my friend has had a photobook of the vacation made each family member on the trip. If you have a lot of photos to upload and are on dial-up (I know, I'm stuck in the dark ages!), you can even send them a CD with your .jpg photos on it and they will add them to your account...no charge. Or if you have a film camera, send them the film (small fee) and they will add the photos to your account and send you the negatives. What's not to like?

mypublisher
This site does only photobooks...professional-quality coffeetable books. I've seen one, and they are absolutely beautiful. Both hardcover and softcover are available, and you can order a dust jacket, which makes it look even more professional. See the pricing and examples on the site.