Historical clue formulations

• Its first video, "Me at the zoo," has over 400 million views — 2026-09-16
• Second-most-visited website worldwide, after Google — 2022-05-17
• Source of a viral outbreak — 2012-06-17
• Company sold in 2006 for $1.65 billion - 21 months after it was founded — 2011-12-03
• Common blog link — 2010-05-08
• Google company — 2006-11-11