  We show that a certain orbit category considerd by Keller encodes the
combinatorics of the $m$-clusters of Fomin and Reading in a fashion similar to
the way the cluster category of Buan, Marsh, Reineke, Reiten, and Todorov
encodes the combinatorics of the clusters of Fomin and Zelevinsky. This allows
us to give type-uniform proofs of certain results of Fomin and Reading in the
simply laced cases.
