[THWAP!]

i will answer this in general. as everyone said, stuff's obviously opp dependent.

Preflop minraises tend to be weak. So if you raise big-ish, you should take it down. this is doubly true of LP minraises.

postflop minbets tend to be weak, especially on draw heavy board. this is usually someone either trying to buy the pot cheap or get the draw cheap. one exception is a thinking player who may be trying to induce a raise. another exception is on a late st, like the river, when someone is blockbetting a showdownable hand. but if they're doing this, chances are their blockbet is larger than the minimum. reasonable observation should indicate what your opp is capable of.

postflop minraises. this is different, IMO. It depends on how much strength you have shown. If you have shown strength, say raising prefl and then betting the flop, and you get minraised, i'm usually not surprised to be shown a set. especially if they lead hard into you on the next st.