Startup Factual profiles mobile-device users for advertisers. https://t.co/KyyFcSqDnU via @WSJ 0 atbildes

Mareks Matisons™
(2015-12-11 20:07:58)
@twitter
Startup Factual profiles mobile-device users for advertisers. https://t.co/KyyFcSqDnU via @WSJ

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