Recently, I was alerted to how questioners choose which of the answers best solve their problem(s). I observed that, especially for beginners, that they did not select the best answer from the available ones, but rather one that imposed the smallest change to their question and in some cases preserve the clutter and bad solution in their code example (in my opinion).
Somehow I understand such an approach. Beginners, especially those who are for some reason forced to use LaTeX and therefore not likely to learn more than the bare minimum for their temporary needs, have a very narrow LaTeX horizon. Consequently, they aren't aware of better possibilities for writing theirs LaTeX code.
One example, which illustrate above description is the following question. This question received three answers. However, the OP selected the first post answer, which in my opinion (well, here I'm slightly biased) is not the best choice.
I know that the acceptance of an answer is up to questioner. However, how does one politely warn her/him that (s)he should reconsider other answers again, because they present a better/nicer result, or have removed all the clutter in the OP's code, or suggested code that is more clear and intuitive, etc?