the stories read like actual pirate yarns. So I'm thinking it's somewhat of a troll. Or if not, then it's a creative way of presenting a fanfic.

As I understand it, a troll is someone who spams a forum with unwanted posts, or writes deliberately bad 'fics just to provoke a reaction. This one looks like a straightforward parody/humour to me. So why "troll"?

hS

...where else that's been said. grin Ah, Douglas Adams...

But yeah; mostly harmless. For now, at least.

A fairly good-natured one, maybe. Mostly harmless. :P I laughed in spite of myself.

Pirate Bob. shakes head People do the strangest things.

And I think we can let him be, unless he starts harassing other users.
He certainly shows more intelligence and wit than the average troll (even though that's not really saying much), which is a nice change.

Pirates. I love it.

A very well done one, I have to say. admiring the work