It was Dreamflower who introduced me to both the "dribble" and "double dribble inverted" formats. :)

A dribble is a poem of ten lines, the first with ten words, the next with nine, then eight, and so on down to one - the "inverted" form then continues with one word, two on the next line and so on again back up to ten. I find they can be very expressive in so few words.

I don't think anyone could blame poor Gorlim, except perhaps himself. At least as a wraith himself, he warned Beren in a dream of the danger, and Beren luckily was away from the rest at the time of the slaughter. If Beren had been killed too, I have no idea how the history of the rest of Arda would have unfolded!