There are several open invitations for a one-on-one exchange.
But Bear , Stearns Charles Schwab and E*Trade do, at least on one exchange.
Its appeal lies in the one-on-one exchange that takes place between performer and complex programming.
And they opened competition for orders on popular options listings like Dell Computer and Microsoft that had traded on only one exchange.
"Your logic was not that complicated," Mr. Obama said to end one exchange on homosexuality and incest.
Although, Thobhani says CampBX is a different business because it's just one exchange on a closed system.
Even when options were listed on more than one exchange, virtually all the business tended to be on one market.
The Birds and Bees Text Line offers one-on-one exchanges that are private, personal and anonymous.
Rooted in neuroscience, ZMET's one-on-one exchanges use images and metaphors to get at the deeper thoughts and feelings of a consumer.
For some, it is a day to spend with loved ones exchanging winged-cupid symbols or confectioneries.
