@randomgirl just so you know, by flagging your chat message, you're alerting the entire network of moderators about your question... not only the math mods... If you're not getting the answers you seek here, it may be better to go to meta.
I don't know what your comment said or where it was posted... I'm not really a user of Math.SE. But moderators don't generally delete valuable comments... please see the comment helper text, though... it clearly explains that comments are to be used for asking for more information or making suggestions for improvements. Did your comment do either of those things?
Ah, and those are the worst. A site can not function if our users write answers as comments. You must post an answer - a complete one - or not say anything at all.
That's a little sad... How can my comment be less helpful though than comments that are not actually useful at all? How is that weighed?
For example I said "because $\int_0^\int x dx$ diverges' and someone else says @leonbloy Spending more words for a more useful comment wouldn't have hurt her.
but there comment stays as if it was more useful or something
Moderators generally respond when comments are flagged... we have a view that only shows the comment and the title of the question. If it's obviously a comment that should be removed, the mod may never see the full collection of comments on the page to remove them all. You can flag any comment you feel is unuseful and the moderators will decide whether they should be removed or not.
Comments can only be voted up, which means that their value isn't something that can be judged equally by all. A comment may earn many upvotes but, because there are no downvotes on comments, the community can't say that it's a bad comment.
Thanks catija for answering my questions. Though I'm still totally lost and there is probably nothing you can say that will help me understand my comment being seen as useless and trashed. Sorry for not understanding.
I do really mean the thanks and going out of your way to explain.
:) I'm glad to help. I don't have a link for Math.SE but I have one for one of the sites I moderate that explains it in more depth. Maybe it will help, maybe not... but I hope that it does: interpersonal.meta.stackexchange.com/questions/1644/…