Like all writers, I sometimes have to extricate myself from requests by people with Really Good Ideas for books that would be instant best-sellers if I wrote them (for, of course, a share of the profits with Mr. or Mrs. Really Good Idea). For all of their enthusiasm and good intentions, most people don't recognize why writers are pale, unpleasant mopes. Ideas are easy. Books are hard. This situation also can be found in programming. Charles Miller found a funny example of "write up my idea" syndrome on SourceForge.