Jeremiah Cornelius writes "Wal-Mart — the retail king of Big Data analytics — will be meeting Mark Zuckerberg for two days in Bentonville, to 'deepen' their relationship with Facebook. The CEO-level strategy summit is intended to bolster the relationship between the world's No. 1 social network and the world's largest retailer. Wal-Mart has been left in the dust online by the behemoth Amazon. An alliance may be poised to challenge this dominance, particularly in light of Amazon's planned foray into same-day delivery nationwide. The companies share James Breyer, who sits on the boards of both Facebook and Wal-Mart. Adding another angle to this, Yahoo's new CEO, Marissa Mayer, was elected to Wal-Mart's board in early June, while she was still at Google. Earlier this month, Facebook and Yahoo settled a patent dispute and announced plans to form another 'strategic alliance' involving advertising and distribution. The implications for online privacy in this series of relationships are uncertain."