DMEB 1: http://fanfic.dmeb.net/ (unfortunately, the fanfic page doesn't seem to load anymore)
DMEB 2: http://www.dmeb2.net/

There were slashers in the DMEB--Siubhan, for example--but definitely the minority.

There are people who use "slash" to mean "explicit fanfiction", which could totally confuse polls like this if one isn't careful. I wonder if that's what happened?