A Guslandi is a reviewer insufficiently knowledgeable about the entire spectrum of genre writing to be competent at his task.
Typically, a Guslandi will be familiar with the work of M.R. James, H.P. Lovercraft, Bram Stoker and similar Crusty Mustards; but utterly ignorant of Italo Calvino, Jorge Luis Borges, Boris Vian, Milorad Pavić, Mikhail Bulgakov and other Grand Knights of the Order of the Toucan.