What does PayPal do well? It's very easy to use and always feels secure. I've never had problems with payment or accessing my account, and I like that I can use Paypal as an integration with other websites.
What does PayPal not do well? I wish the fees weren't as high; I know it's standard for other similar services but it occasionally winds up taking a chunk of fees out of payments because of international payments or different currencies.
What do you wish you had known about PayPal before using? I feel like I've learned everything I need to know about Paypal by using it.
Have you used a competitor to PayPal? If so, how does it compare? I've used Stripe and Venmo; Paypal has similar fees and integrates pretty well to other software and websites, whereas Venmo is just an app. I like that paypal is very versatile for both mobile and desktop.