The art of reading tea leaves is called tasseography or tasseomancy.

Here's a site devoted to tea leaf reading:

Reading Tea Leaves

There are several tea company sites that have good information about tea, tea rituals and ceremonies, and reading tea leaves:

Adagio Tea - "The Internet's Friendliest Tea Store"
Eastern Tea Company: Tea Knowledge Base
Stash Tea - Lots of good information here, including a page of Tea Quotes from literature and pop culture.

Tea doesn't just taste good, it's good for you, too! Here's a UK site devoted to tea's health benefits: Tea Health.

A good site with many tea links is this page of Tea Related Links; also, check out other Divination Links.