Do Men Try to Impress Prostitutes?

http://www.thebeerbarrel.net/showthread.php?7616-Do-Men-Try-to-Impress-Prostitutes

One of the things that Chen and Santos discovered in their research is just how humanlike the capuchins are. As soon as they learned that coins had value, one of the male capuchins gave a coin to a female in exchange for sex. Yes, capuchins engage in prostitution. The observation that nonhuman species engage in prostitution is not new, however. Frans de Waal and other primatologists have long observed that bonobos also engaged in prostitution, by exchanging food for sex.