[steveklabnik]

They all are. Trolling isn't about what one says, it's about the intention behind the things that are said. Completely factual statements are still trolling if said with the intention to cause disruption.

[houseabsolute]

Disruption is on the back burner, but it looks like his primary intention is to inform, so I don't see the problem.

[steveklabnik]

I would disagree. His primary intention is to talk shit on MySQL.