currently there arent many tea stores other than adagio.com(ebates at 6%) and mightyleaf.com(mrrebates.com at 7%) as well some coffee store that sell tea too.
also you can get 3% back from ebay purchases.
sometimes it can be annoying as you have to make sure you place the order in the same page you were directed from the cash back website. and it does takes over a month to get the $$.
i DO shop a lot online so in the end it adds up to few hundreds a year, which all goes to tea shopping
other websites:
www.fatwallet.com
www.ebates.com
www.mrrebates.com
www.http://search.live.com/cashback
www.bigcrumbs.com
other site im a member too is www.freeshipping.com. this one only worth if you shop a LOT. i usually use with ebay to bring shipping costs from china and japan down, as you can get $10 back for each transaction.
hope it helps everyone save a bit in this current economy...