We're trying to keep them at reigns as best as we can, but sometimes you have to draw a line between darkness and light all by yourself. Major (or minor) plot points are the things we'd like to keep only for those who really wish to read 'em, but if one considers the things that can be run into in ANY preview or review like short plot outlines or cast lists... The Raven's really not your biggest worry if you wish to avoid those.
What's cool and what's not, I think Aaron clarified it pretty well in the thread CH pointed to. We are on an Indiana Jones site after all, so not keeping up with the buzz would be even more inconvenient than the opposite.