In this segment from The Motley Fool's everything-financials show, Where the Money Is, banking analyst David Hanson is joined by Motley Fool Pro analyst Billy Kipersztok to search Twitter for some hidden insights. The guys tell viewers why they are watching Capital One (COF 0.62%) and eBay (EBAY -2.96%), and they also pose the question: What makes MasterCard (MA 0.05%) no longer a buy?