Totally agree about the importance of naming. But the big problems that are hard to fix later come usually from design flaws, not from naming and often are overlooked in reviews.
(I'm not trying to be exhaustive. The examples above are common ones I've seen regularly and they make me cringe.)
I don't need to know the variable names used in these cases. The very act of not using a relational database properly or not handling exceptions is easy to spot.