The fact is, storm - and I do not use the word "fact" lightly here - most short stacks are indeed bad players. You can especially tell this if they buy in for funny amounts like $23.52 (this is usually all the money left in their account). Moreover, you can quickly differentiate between short stacks you need to avoid and short stacks you should be actively headhunting. Within two orbits, the number of hands a short stack plays and the number of times that player raises - or better yet, calls other people's raises - will tell you what you need to know. But absent that information, I *always* proceed with the assumption that they are bad players, at least in 6 max games at the 25-100 level.
Typical hand: I get AQ, raise, short stack calls me. I get a queen high flop (let's say QJ6) with two clubs (I don't have a club). I bet out, short stack raises all in. What should I do? Well: facing a raise here from a normal player, I might start to consider that he has a set, two pair, or a dangerous combo draw like T9 of clubs. I might fold. Against a short stack, I do not consider these possibilities. It is way too likely that he is bluffing with a flush draw, a weak queen, a weak jack, or even a middle pocket pair (I've seen all of these, repeatedly). I will call every time and almost always get the best of it. This kind of hand is so ridiculously and consistently profitable for me that I wouldn't even DREAM of changing the way I play it. And if that means occasionally, accidentally paying off someone like you - so be it. Net EV is still ++++++.