The purpose of the report button is to "quickly alert a Staff member to any posts which are offensive, contain actor/character/member bashing or which contain spoilers."
Please do not use it for anything that does not fall into the areas highlighted above in bold. It is not to be used to complain that a post is in the wrong place, for example (unless, of course, it should be in the spoiler forum).
See this thread for further info:
Obviously there may be occasions when you aren't
We will certainly make sure there are no spoilers in the episode threads, so that anyone can look in years to come (as someone is currently doing!) and read the summary/look at the comments and not be spoilt by knowing what comes in future episode(s).