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We solve the problem of the optimal cloning of pure entangled two-qubitstates with a fixed degree of entanglement using local operations and classicalcommunication. We show, that amazingly, classical communication between theparties can improve the fidelity of local cloning if and only if the initialentanglement is higher than a certain critical value. It is completely uselessfor weakly entangled states. We also show that bound entangled states withpositive partial transpose are not useful as a resource to improve the bestlocal cloning fidelity.Comment: 6 pages, RevTeX4, 2 figures, published versio

Usefulness of classical communication for local cloning of entangled states