The location, place, or instance where Twitter, Facebook, and MySpace are grouped together. Derived from "twitspaceface" (a verb) to create a noun (particularly a place).
Harold's FireFox Browser was a Twitfacespace. He had bookmarks and tabs for Twitter, Facebook, and MySpace.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).