Do you have a social networking account (non facebook) and a facebook account too?
For example:
You have a twitter account and a facebook account - Answer yes
or
You have twitter account, but do not have a facebook account - Answer no
I'm just trying to figure out the likelihood that if someone has any social networking account (non facebook), how likely are they to also have a facebook account.
I'm creating a social segmenting service to segment email data. My gut tells me that while there are probably millions that use facebook, but no other social site. I guessing that a very high percentage that use a social site that's not facebook, also use facebook.