If you're talking about a cam taking 2,3 or however many pics in a burst a few seconds apart it simply gives you a better chance of getting something else on film, like perhaps a 2nd or 3rd deer coming down the trail that a single pic set with a longer interval between pics wouldnt get. If you have a cam with good battery life and a decent size SD card i would say that would be a good setting to have it on. I have my scoutguard set on a 3 pic burst with the interval set at 15 seconds between bursts. i will get pics with nothing on them when its set like this, but its better then missing something that may have walked by.