What's Bing Rewards, How It Works, And What's New? - MUO
http://go.microsoft.com/fwlink/?LinkID=617350
WEBJul 9, 2015 · You must perform 150 credit-worthy searches every month to maintain Gold status. One final way to earn credits is through referrals. Every time you refer a friend who creates a Bing Rewards account, you'll earn a one-time bonus of 150 credits when they reach Silver status.
DA: 86 PA: 92 MOZ Rank: 8