Ask your ad rep at the paper why you are paying them when any good your ad could do is countered by a bad review. I had a very sophmoric, amerture, negative review appear an inch and a half away from my ad for the same movie. I pulled my ad the next week and told them i can spend my ad money elsewhere. Since then, any negative reviews have been from the best critics.
They will say that advertising has no influence over editorial content. Journalistic ethics is an oxymoron. It's one thing to report on a bad product for the safety of the public -- even if the seller advertises, but it is another to have a choice of good and bad movie reviews, then choose the bad. Sounds like someone has a little power problem -- someone who has never had to do anything but warm an office chair and will never do anything like run their own business.
there is good and bad film criticism. A good friend of mine has his Ph.D in film studies, and tho he and i will argue about film after film, his arguments hold water. I can use him, and any other intelegent film critic, as a barometer. i don't have to agree with them, but if they are consistant, i can usualy gage my reaction from theirs. so, i guess in my not so humble opinion, film critics matter. but, it helps if your paper consistantly publishes the ones with two brain cells to rub together.