Poke Spot gives you the chance to catch wild Pokemon. There are three different Poke Spots; Oasis, Cave and Rock. Once you have captured a Pokemon from a Poke Spot, you can trade them in-game for a different Pokemon. In order to catch one of the Pokemon, you must lay a Poke Snack, then checking on your radar, you will be able to know when the right time is to catch the Pokemon. But watch out, or Munchlax might eat your food before others come!
Related Threadsgrottoes to poke spots. - last post @ May 15, 2013
Street pass and Spot Pass confirmed. - last post by @ Jun 12, 2013
Platinum poke radar - last post by @ Apr 30, 2010
Battle spot - last post by @ Sep 27, 2015
Poke Radar Shiny Chains - last post by @ Jul 1, 2007