The more consoles that get released the cheaper the old ones get. This is also true for the games on those consoles. With the release of the PlayStation 3 the games for the older PlayStation 2 immediately dropped in value. Which mean us; The gamers get to afford more of those classics!
But what's the point in walking down to the shops and paying for each and every game when you can pay a small one time fee, which is about the amount of one game anyway, and get access to PlayStation 2 games for life? These days it's a lot easier to join a site on the internet that does this when not only do they have PlayStation games, many of them have games for other platforms, music and movies as well.
There are a lot of these sites out there and many of them can be scams. Some have slow download speeds and only a small selection of games, many of which are old and out dated. But there are a few sites out there that are way above the rest. With up to date databases full of games, music and movies all ready to be downloaded at the click of a mouse.
Once the Ps2 Games are downloaded they can be easily burned to CD and played on your console straight away. Play one game whilst you're downloading another! They also have person to person networks as well as there only databases, making the amount of games varied and ever expanding.