In an article about Zhone’s new GPON product, there was this bit regarding the two competing in-home broadband delivery standards MoCA and HomePNA:

As for MoCA, the technology that Verizon has used to employ its customers’ existing coax, Presworsky said, “It looks like HomePNA has a big advantage. We heard a lot of negative [things about] MoCA–interference with other RF signals.”