I think labeling 'expert' is almost like an attractant for many of the folks that shouldn't bother. Likewise, there are some good users of OpenSSL, the rumors of it being "bad" or "insecure" would be damaging.
I'm not saying it's a bad idea exactly, just if you discover the way to word the warning to prevent people who don't understand that they're newbies from doing newbie stuff with it, you'll be on to something. I say you put that label on C compilers too.
This library exposes a very complex API. It is intended for expert users only. If you have any doubts about your knowledge of the underlying cryptographic primitives, we strongly recommend against using this library. Doing so without advanced knowledge of cryptography could compromise your security. Instead, we recommend you use a high-level crypto library, such as Keyczar or NaCl, both of which are designed to "just work" in the hands of developers who lack specialize expertise in crypto.
