The original Moorhuhn was also an advertisement game at first. These guys ripped off an advertisement game for their advertisement game.
As for who would play this: In the early 00s Moorhuhn was THE casual game over here. "Made in Germany" was a huge selling point before gaming went mainstream, got you good ratings and coverage in gaming magazines despite being at least 5 years behind state of the art by American standards (that's the deal with all these weird German games) and Germans were addicted to clicking on swamp chickens like others to Minesweeper. As hard as it is to believe, otherwise sane adults actually bought this over and over.
They run an AOL/MSN style internet portal, this was for their finance/business news site.