That's not a bad article. But you really must not use silver teapots because they flavor the tea. Some would say that the insistence on preheating the pot was to prevent lower quality pots from shattering when the boiling water was poured in.

Steeping black tea can be overdone, if you leave it for long you get a metallic taste and eventually an iridescent sheen on top. There's so little tea in US tea bags that you have to leave it for ages to get any flavor. I buy UK tea bags from Amazon.com and they make strong tea in little time. The black tea available in the US is generally very very poor.