myself depends on the player mid raising.. depends what I figure out their betting patterns are..
some people min raise becuase they dont know any better.. especially if they are moving up from limit to no limit.
some people min raise on good draws. Kind of a build of a pot type of thing in case they hit. Some people mid raise when they have a monster. give you the correct odds
of a possible draw that if you hit will be no good. also to build up the pot.
some people do wen they have nothing just to see if they can steal a pot.
so really depends on the person doing the re-raise