With more than 400 million active account holders around the world, PayPal is a money transfer giant. Because the service is so ubiquitous, many online merchants and customers know and trust it.
Venmo defends its "public-by-default" privacy setting, arguing it makes the app engaging. But critics say it’s an invasion of privacy or, worse, fodder for fraud.
The ubiquity of PayPal checkout means you'll have many chances to snag a high rewards rate. Non-PayPal purchases, though, earn a less-spectacular rate, and the card lacks a few key features.