Today I caught something that made me laugh. There were two Google ads next to each other below a post. One read: "Regina Catholic Tours of Fatima, Lourdes, etc." [i.e. traditional Marian shrines in Europe]. The other ad next to it read: "MDiv at Westminster Theological Seminary" [i.e. a degree program at a Calvinist Seminary].
I'm Catholic and I graduated from Westminster so I suppose that Google ads matched them up. On one hand, it's pretty funny that Westminster Seminary was paired up with the Blessed Mother. On the other hand, it's eerie how well Google can mine a website for relevant information pertaining to ad customers.