More than half a billion images are now posted on Flickr, a superbly designed sharing platform and social network for photo enthusiasts that, since June, also offers French, Spanish, German, Chinese, Italian, Portuguese and Korean language options. (Next up: video.) Upload and tag your images and make them available for community consumption, and see how they rate on "interestingness" and "gorgeousity;" join a group (there are more than 300,000 of them, and each one has its own theme); comment on other people's images or subscribe to a photo stream. The cool Maps feature shows where photos were taken. For more private sharing and straightforward printing services, use Shutterfly or Kodak EasyShare Gallery. Or try the new, no-frills Picupine; it doesn't offer printing or long-term storage, but it allows you to share your photos quickly and easily, without forcing you to create an account first. Once you've submitted your photos, the site creates a Web link you can then send to friends and family.