The witty nickname for "Eve: Online" social networking site "evegate.com". Because it's facebook. For internet spaceships.
"Did you read your evemail?"
"no... can't be bothered to log in..."
"Fuck that, dude... just check Spacebook!"
by Namyri'el September 26, 2011
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checking or being on myspace and facebook at the same time
guy 1: hey chad, what are you doing?

chad: im spacebooking, i have new comments and new notifications, at the same time!
by Romagic April 1, 2008
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What old people call Facebook or MySpace after a younger, more modern person helps them set up an account on one or both of them.
Bob: You should have a lot of fun on these social networking sites, Grandma! They're called Myspace and Facebook!

one day later...

Grandma: This is as stupid as hell! I don't even know how to log on to Spacebook!!!

Bob: rofl!!!1!!!11 Spacebook? It's either Facebook or Myspace, Grandma. And I showed you everything yesterday, I even wrote it down!

Grandma: to hell with modern-day grandson's! and technology~!
by lilitalian32 July 8, 2009
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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
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1) A combination of people who use MySpace and/or Facebook. These people are known to have little lives, just because they sit at their computers all day doing nothing. Many celebrities use these websites to show off- (see "Face-brag"). Also known as "MyFace".

2) A book in space.

3) A book talking about space, as in outer space, or just plain old space.
1) Bobby: "Jeff uses Facebook and MySpace... what a Spacebook."

2) Astronaut: "Oh my God! It's a spacebook!"

3) Guy: "Wow, this spacebook really does give a lot of information about the universe!"
by Cheesapuffa July 8, 2009
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A MySpaceFaceBook conglomerate, since, interchangeably, one wants to be like the other so bad and continues to remodel its own site to keep up with the other, to the point at which they might as well be one and the same, your preference depending on which ones your e-friends use at any given point in time.
Me: Wow! Take a moment to gaze upon my most contemporary Kodachrome on Spacebook. It was contrived by myself for my colloquial photography class, and so I request your arbiter conjecture in the form of a comment.
You: wUz U tAkIn BoUt MaNg? i AiNt GoTz No SpAcEfAcEcAkEs? U fInD MeH oN mYySpAaAaZzZe My NaME iS hOtTaYbOoTaYaKaShAbItCxZH!
by UberLemon June 7, 2009
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an expression used to illustrate the (limited) interchangeableness of two popular social networking sites, which is amplified by the facts that each site's title is a compound word and one of the words compounded into one site's title rhymes with one of the words compounded into the other site's title
I'm friends with him on both myface and spacebook.
by thekingofallsocialmedia April 14, 2010
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