It's true that very, very few people read the messages and helpful informative boxes that are placed on web pages. It's a phenomenon I discovered long ago and I have found it to remain true to this day. People skip over prominently placed instructions and then get confused because they don't know what's going on in the page. So the solution is usually to provide an intuitive interface that explains itself.
Anyway, having said that, I did add an informative info box to the top-right of the Plant Photos forum page. It might help a bit.
