https://consumerist.com/2017/08/04/grubhub-will-buy-eat24-from-yelp-for-287-5m-free-delivery/

Just two and a half years ago, Yelp acquired the food delivery site and app Eat24, which seemed like a complementary business at the time. Now GrubHub is buying the site for $287.5 million — a little more than double what Yelp paid for it in 2015 — while the two companies will keep linking to each other and referring customers back and forth.

While some people speculated that GrubHub could be an acquisition target for Amazon after the Everything Store announced that it would be acquiring Whole Foods, instead, the company has gone on its own acquiring spree.