  Recently we proposed that the acceleration of the Universe could be due to
gravity leaking to extra dimensions. This scenario gives an alternative to the
cosmological constant or quintessence. In [astro-ph/0106274] the authors
claimed that this proposal is strongly disfavored if not ruled out by the
existing data on Supernovae, Cosmic Microwave Background and clusters. We show
that the work [astro-ph/0106274] contains incorrect statements in the
theoretical part, and, moreover, we argue that the main conclusions of the work
concerning the comparison with the data are premature.
