After donating to the Red Cross through Amazon, I noticed this in the corner of the confirmaiton page. My reaction was "No duh." But then it reminded me of one of the cardinal rules of page design-- never assume that the customer knows what you do. I don't know how many home pages I've visited where I'm looking around trying to figure out if I'm at a useful place. New people visit your site everyday. And much as it may bore you to say "Gromits Inc, We sell grommits online" on the homepage month after month, it may just the thing to turn a visitor into a buyer.

Another best practice from Amazon.