Tell me about an SEO experiment that you've run recently. What was the result? If you're in the trenches doing SEO, a key to success is being able to figure out what works and what doesn't. I'd like to know how they run their experiments, and if they don't run experiments, that's a red flag. Ken Lyons kept an SEO log where he tinkered with various SEO experiments, sometimes dozens at a time. I love an SEO with a bit of mad scientist in them.