Occasionally, I notice some very minor typos in one of my answers/questions that is already not in the front page. Also, there are cases where I'm not completely satisfied with my phrasing, and I'd like to make some small changes. The problem is that any edit bumps the question/answer to the front page, and therefore until now I have never made a minor edit.

However, as time passes by I get more and more annoyed by seeing these minor errors/bad choices of phrasing, and I'd really like to know whether making minor edits is legitimate in MO. Of course, I'm not talking about a burst of edits (say, at least one week between minor edits).

Of course, it is not a good idea to make 50 or 100 edits to your posts and that would be bad etiquette. Otherwise, unless the number of edits is very high, it is better to correct an error, even a minor one, than to leave it as it is.

@Unknown G.,

you are very welcome to make minor edits to your questions, and especially encouraged to do so if you will otherwise be annoyed!

Bumping a question to the front page isn't entirely a bad thing. I don't mind that the extra attention you put into your question (cleaning up typos, improving phrasing, etc) results in some extra attention on the part of others, answering it. Of course it's a grey area, where the unacceptable behaviour can only really be distinguished from acceptable behaviour by intent, not means. The fact that you're being cautious about this issue almost certainly means you're being too cautious. (Those who take the time to read the rules, generally don't need to...)