lol...well the way i've noticed it when playing, when ur at a spot, monsters seem to spawn at another place around the area and seem to spawn less when there's a person there...as for bot locations, everyone just has to have their own spot.
Because if we posted bot spots and everyone used em, there would just be like 3-4 botters in 1 place and that would means less kills.
Just gotta look for a good spot, everyone might know some good spots which u could post i guess.