PR9.nl was started off in 2009 or so as "proemevlaai", a delicious "vlaai" that my mom bakes in summer, when the plums are ripe.
It started as an SEO thing, with zwembad-aanleg.nl, which was supposed to be bought by client. Who then didn't do so. We put adsense on the thing and suddenly some money was coming in.
Then in 2013 a good friend of mine started becoming interested as well and at this point I have high hopes for realizing the original goals.