Until I write my deconstruction of tea, here are a few, tastefully noncommercial sites:

• Tea as in Terrific [silly name, don't you think?]
• tea [for the herbal set]
• Tea Dictionary [so that you can discuss tea]
• Warm the pot.
• The History of Tea [comprehensive]
• Tea Time on the Web [a shop, but interesting]
• Kirin "Tea-Server" [in Japanese, and strange]
• Skip the lemon.
• An article on cancer and tea
• Kombucha Mushroom Tea: What’s All the Hoopla?
• Tea Related Web Resources, a comprehensive collection
• Drink it strong.
• Chado, the Way of Tea [a truly beautiful site]
• Tea in Japan [I love bibliographies!]
• TEA, a drink to quench all thirsts! [site for an exhibition]
• Love that particular bitter-astringency.
• Finally, the last word on tea etiquette, courtesy of Miss Manners.