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1.
someone who consistantly looks at their facebook and myspace all day for entertainment purposes.
What has John been doing this summer?
I'm pretty sure he's a spacebooker and doesn't do much.
by Lou-Money July 31, 2008
 
2.
A person who has a myspace and facebook profile.
My aunt is a space booker, she's always online.
by toeknee martian June 14, 2010