[jacquesm]

That's not a dumb question at all. Lightning protection is a different story than when the tower itself conducts. The nacelle (the part that houses the generator) is grounded and so are the blades (they have an integral conducting mesh). All of this is conducted all the way to ground level by conductors much the same as what you'd see on a wooden house with lightning protection. I'm not sure what they've done on the outside of the structure, but I suspect that the chances of the nacelle or the blades being hit are far higher than the chances of the tower itself being hit directly. If it does get hit it might ignite so there is still some part that more detail would help on, I can't see anything special in the photographs accompanying the article.