It sounds good at first glance, until you get into the details...
As of now there are 97 posts containing rtfm. Among them I see:
- Someone asking for the manual
- Someone who answered his own question with the manual
- RTFM appearing in program output
- RTFM used as an example similar to foo and bar
- Someone stating that they read the manual
One thing I didn't see from my short spot check was misuse of "RTFM". Such things should be dealt with on a case-by-case basis, as they are now.