Nothing goes through me more than someone getting heckled or being told "rtfm" (exact words, not general idea) when they ask a question. It's as if some people on cocoa-dev (and a majority of mailing lists) for that matter feel some sort of entitlement to be abrasive and rude when they have to deal with newbies. Lest they forget they were once in that state too.

That being said, when relevant screenshots are a good thing to link to when you are having issues as well. A picture is much more useful in explaining an issue with a custom view than you trying to describe the issue by itself.