I've never met her in person, but Hypatia ripped apart a product that a company I worked for released. Not only did she disclose terrifying problems in the most responsible and respectable way possible, but she was genuinely kind and interesting to work with. Based on my real world experience as opposed to 140 character bursts, I have a tremendous amount of respect for her.

Consider that someone might have incentives to communicate with a potential client far more nicely than to a person they dislike who probably will never be their client.