The original stack overflow site has some "dirty" words and if you use them you get, I think, a warning before it lets you post. I think in some cases you cannot even post a question that has certain words in it.
Considering the history site keeps getting bad questions maybe we should add a list of "warning words" that try to get a poster to revise their question before posting. For reminder here are the undesired question types:
- Asking for reference material
- Questions answered by a simple Google search or to be found in a Wikipedia page
- Predicting the future based on historical trends
- Conspiracy Theories or Pseudo-science
It should be pretty easy to think up some of the words and phrases that should trigger a warning given this list.
I am posting some statistics from the article linked by Yannis (The Efficacy Of Stack Overflow's Question Title Filter) below:
actively helpful - 37% of all titles gained some detail
benign - 62% of all titles became no worse
actively harmful - 2% (3 total) posts obviously hacked around the filter
I would add that it is very easy to test a prospective filter: you just run against the database of existing questions. If all of the posts it flags were put on hold, you know it is accurate.