I was looking at a small part of an interesting talk that happened in the JVM language summit, aboute the .NET reactive framework and then my eyes decided to look around at the "noise" in the page and I realized a very odd recommendation (highlighted in red):
Maradona in India? Huh?
It just shows how easy it is to get recommendations wrong. Probably it's a talk that has attracted soccer-enjoying people, like Europeans or South Americans, that are over 30 years old (to maybe still have a positive connection to the name "Maradona") and then suddenly there you have a recommendation. So right, but so wrong. Just tells you more about the few people that watched the talk than anything what the talk is about. Some people might claim that this is a sign of a good recommendations engine, I'll be ashamed of it.