We'll review the recent developments in pi, eta and vector meson photoproduction at JLab energies. We'll see the theoretical implications of the factorization between the meson dynamics and the target and compare them to the new data obtained by the GlueX detector.
We'll discuss the photoproduction of eta-pi^0 and the sensibility of the observables to the exotic P-wave. We'll present a new observable, the beam asymmetry along the y axis, which allows to easily identify exotic odd waves.
Finally we'll illustrate these considerations with a simple model for the eta-pi^0 photoproduction.