Something you may find interesting (or not), in the tv broadcast world (I work for a local affiliate), there is an area called "safe title". It is used by directors, graphic artists, camera ops, etc. Everything you definately want to be seen needs to fall in that "safe title".

However, it can be cheated. We cheat it when we put up school closings, election returns, weather crawls, etc.

Doesn't answer your question by any means, but thought you might find it intersting.

SamG