The following video is part of our "Motley Fool Conversations" series, in which Katrina Chan and Greg Robleto discuss topics across the investing world.

American Express has entered into a new exclusive partnership with the social media site Twitter to provide a fresh new means of offering users discounts for using their AmEx card and Tweeting about their purchases. Greg and Katrina look at this arrangement from all angles, examining how it will benefit AmEx,Twitter, the retail partners, and the end users.

Katrina Chan and Greg Robleto have no positions in the stocks mentioned above. The Motley Fool owns shares of Best Buy. Motley Fool newsletter services recommend American Express and McDonald's. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.