Does your site need users to pay for merchandise or subscription? Why not offer them the easiest way to pay online? Paypal is a service that allows people to pay for anything online without the need to give the seller bank account information or credit card information. This allows for the end user to pay for things without worrying about their financial security. Paypal is one of the most used payment methods on the internet. The service has over 100 million accounts active with users around the world.  Don’t prevent your users from spending money by leaving this feature out.