Cost: Free for 300 MB (megabytes) of monthly photo storage; $1.87 a month or $25 a year for unlimited photo storage and HD-video storage.
How it works: Load your photos, crop them, tag and organize them, then edit them. Order prints through Snapfish.com, share albums with friends, or invite friends on Flickr to contribute their images to a Photo Group.
Cool perks: With the paid account, you can download your photos at their original size from any computer. You can use the Print and Create tabs to make unique photo gifts, including books, calendars, collages, and posters.
Drawbacks: In the default setting, only you—not those with whom you share your photos—can order prints of your images.
Best for: Experienced Web users eager to share images with the public. Also great for Yahoo! Mail users. Any photo you send from or receive to that account is saved to your Flickr profile.