An interesting approach to prior art

I've found quite a few examples of "one-click ordering" in computer games, and had a few emails from others about them too. An interesting question in this context is whether you are ordering an "item" when you buy something in the game. Amazon's specification says:

"The products can include items (e.g., music) that are delivered electronically to the purchaser over the Internet and items (e.g., books) that are delivered through conventional distribution channels (e.g., a common carrier)."

Leaving this question aside for the moment, I have had a couple of interesting emails from Jan Kechel. He brings up the subject of early browser games and points out that they very likely used identifiers at the client system-perhaps even a persistent identifier stored in a cookie.

If anyone has any hard evidence of a prior art game that combines one-click ordering with a client-side identifier (especially one stored in a cookie) I would like to hear about it!

Disclaimer: I am not a lawyer, this isn't legal or professional advice, etc, snore snore zzzz.....