Poipet is the gateway to Cambodia for many overland travellers coming from Thailand. It does not provide a very warm welcome.
Gordon Sharpless notes that "Poipet more or less rhymes with toilet" and this caustic observation is, sadly, true. Poipet is a miserable huddle of touts, beggars, thieves and dodgy casinos for daytripping Thais, and spending any more time than absolutely necessary is not recommended.