I share both my own games (Love of Magic, Morningstar and Wings of Empire) here, and also talked the Flexible guys (where I'm a programmer/producer) into doing the same. So it's not 'the website' putting up the links, it's me uploading it myself as one of the devs.
Why am I doing this? Because I believe they're good games, and if enough people play them some will chose to support the developers so we can afford to make more games. Flexible media is a full-time team, with anumber of 2D artists that all expect to get paid every month, so we have to make money to afford to make more games.
As for why it is the previous version, not the one released yesterday? That's because asking for support is more likely to work if you've also got a carrot to give. So the carrot here is; here's another 2 hours+ of content to play, for free. We've also just launched another big chunk of content, and it's on sale right now; grab it at launch discount, and get more story, more sex scenes, and the conclusion to the Paradise Lust 2 storyline.
Hope that helps.