We&#x27;ve chosen PayPal, because of few very cool features:<p>1. It supports B2B payments. We us this model, because we don&#x27;t want to keep your money. Whenever you want to tip somebody you do it directly to that person.<p>2. You can still receive money even without being a member of PayPal. If you are not a member and somebody makes a payment to you, PayPal sends an email asking you to register and receive your money.<p>3 It&#x27;s very simple for you (you just need to put an email address).