The app was created by a New York-based team that Twitter acq-hired in recent months.

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Lazerow joined the newly created Salesforce Marketing Cloud over the summer in a major acq-hire for Salesforce chief Marc Benioff.

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Facebook recently acq-hired the team behind Foursquare rival Gowalla to work on Timeline, and to, I assume, make those maps as robust as possible.

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