Another Twitter acquisition to add to the list: Spindle, a search technology company that informs users about what’s happening at local businesses around them – kind of like the “push” to Foursquare’s “pull.”

Spindle, based in Boston, will be relocating to Twitter’s San Francisco headquarters, and its services will be “sunsetted” (shut down) as the company focuses on “new and exciting opportunities,” according to the Spindle blog.

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