ShopDiscover和Bing的cashback，可以一起弄到吗？
google到有人说可以，http://slickdeals.net/forums/showthread.php?t=1663975
To get Bing and Discover... You open with bing and go all the way through to
check out.. Then you stop and open through discover.. you go to your cart
and hit check out.. log in and all that stuff.. then you finish your
checkout with the Bing Window.. Has worked well.. I had to call only once...
这么说，步骤就是：
1. Bing,找买的东西直到Checkout；
2. 在ShopDiscove打开discover的link；
3. 通过discover的link去结帐；
4. 最后finis
