Link roundup

1. Funny headline: "Homeopathy's Ineffectiveness Saves Lives." (As a demonstration, people ingested what should have been massive overdoses of "medication." But since the "medications" were homeopathic, they contained no active ingredients and had no ill effects.)

2. Even funnier, Zach Galifianakis's latest Between Two Ferns.

3. Conan O'Brien aired hilariously offensive mock Groupon commercials.