Gmail (Invite-Only Launch)
Google's email that launched with a then-unthinkable gigabyte of free storage — so much that people assumed it was an April Fools' joke. During the invite-only beta, a Gmail invite was a genuine status symbol.
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Orkut
Google's first social network — named after the engineer who built it — where you left "scraps" on friends' pages, rated them Trustworthy, Cool, or Sexy, and joined communities for everything. A modest curiosity in America, it became a full-blown national obsession in Brazil and India.