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San Francisco Weekly reports that Instacart, the personal grocery shopping service, has added an organic, worker-owned grocery store, Rainbow, to its roster, which in San Francisco thus far has included Whole Foods, Safeway, and Costco.

"This is a coup of sorts for Instacart," the story says, "which is competing in the increasingly dense online grocery delivery space. S.F.'s delivery market for local goods has been dominated by Good Eggs, the online aggregator of dozens of small farms and food producers."
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