I wouldn't call it getting in trouble!  It's just that there are certain guidelines for posting screenshots.  The bigger the thread, the more resources on the server it consumes.  If everyone posts huge multi-picture threads then things get REAL slow.  It's all just to keep things smooth.  I've seen pics posted here that take up 500k and that's the limit for an entire thread.  Now we don't always catch everything, and there have been exceptions to the thread limit, but we have to keep things as uniform as possible.