[m_ram]

I was about to argue with you about it not being very confusing, but then I read the "About" section on the front page:

"This site allows you to navigate the bitcoin blockchain (a database which holds information about all transactions)."

That really does make it sound like they are storing the centralized database for bitcoin.

Edit: changed "storing a" to "storing the" to clarify my point per gojomo's reply.

[gojomo]

Blockchain.info is storing a centralized database for Bitcoin. Just not the centralized database... because there's not any official one. They're a value-added replica (via indexing & UI), not a constitutional authority.

(They have some earned authority, by a record of useful service.)

[ars_technician]

It's not 'a centralized' database at all. Calling it that only adds to the confusion.

[Crito]

I can see where you are coming from, but how could you word that to be technically correct, succinct (not a full blown lecture on what bitcoin is), and not leave yourself open to giving people that impression?

Bitcoin isn't the simplest concept around. Unless you are in the business of packaging up bitcoin for non-technical consumers, I think it is reasonable to expect your users to bring some knowledge about bitcoin to the table.

[Philadelphia]

"This site allows you to navigate through a copy of the bitcoin blockchain"

[Crito]

Yeah, that's definitely better. You might still have people falling into the weird "the blockchain is a bunch of html documents" hole though.