As businesses grow, the population they reach grows as well. In other words, it can be stated that as the demand on products hat a business offers grows, it is forced into a place where it needs to grow itself to be able to meet those demands. With this kind of growth, a business or company will expand beyond the borders of its geographical location, reaching populations in places far beyond where they can physically go. With this growth payments in cash, or check, or any paper form can become a little bit complicated. In this case transaction processing services or payment processors like PayPal come in handy. You are able to market your goods online to your wide market, and be able to have instant payments made to you through these processors.
Java game development framework
Developing a cross-platform Java game framework based on OpenGL for Windows