"In the real world there are countless circumstances where we only know a person by their pseudonym or by their public identity, " he said.

WSJ: The Debate Over Online Anonymity

But there are only a few cases where we know the relationship of a specific mutation to a specific effect, and also only a small number of cases where an effect is determined by a single gene rather than the combined effects of hundreds or thousands of genes.

FORBES: So Much Hype, So Little Substance

"It's the only country I know where we've done that, " says Marks, whose firm has factories in 28 countries.

FORBES: Magazine Article

Not only do we not know where we are going to be with swine flu in a few months time, we don't really know where we are.

BBC: A scanner to detect terrorists

We all know those web pages where the only alternative to a site-specific login is a social networking account.

ENGADGET: Mozilla Persona sign-in launches in beta, skips the social networking ball and chain (video)

So, gang, you are all on the hook. (Laughter.) We know where to find you -- (applause) -- and not only to fulfill these commitments, but to make sure that as we go forward our military families are being heard across the government.

WHITEHOUSE: Supporting Military Families