Photoelectron angular distributions (PADs) are often used to probe the properties of the molecular orbitals from which the electrons are ejected. Unlike neutral-molecule ionization, anion photodetachment leaves behind a neutral residue, which interacts relatively weakly with the departing electron. It is for this reason that exit-channel interactions are often disregarded in the analysis of anion PADs and the measured photoelectron anisotropy parameters () are interpreted solely in terms of the anion/neutral electronic structure. This approximation has its limits, which are easily breached if the neutral residue possesses a significant dipole moment. The charge-dipole interactions between the departing electron and the remaining neutral molecule are not as strong as the Coulomb force in neutral-molecule ionization, but they do affect the cross-sections and (asymptotic) relative phases of the photoelectron (orbital) angular momentum partial waves. Since PADs reflect interference between these partial waves, it is not surprising that they too are sensitive to the interactions. Moreover, the non-spherical dipole potential results in mixing of the partial waves propagating in the dipole field.