[s_y_n_t_a_x]

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[andrewprock]

For wikipedia, the guidelines are here:

https://en.wikipedia.org/wiki/Wikipedia:Biographies_of_livin...

I'm not sure that Google has a published set of guidelines. Obviously Hacker News has a different set of guidelines.

Individual corporations are allowed to make their own guidelines. This is what Libertarians call "freedom of association".