Since everyone hates 'soft' questions so much (but has too much fun with them to banish them forever)...
Add a 'Soft' flag.
It could work that same as all the other 'vote based' things. You know, needs 5 votes against to be marked 'soft', but could then be 'hardened back up' by 5 votes for.
Once a question is flagged as 'soft' it can't gain any rep/badges etc.
But different to 'wiki' in that the 'soft' flag doesn't change the ownership mode but merely indicates that the question really contains no redeeming value other than humor/comedy/vacuous cartoons.
This will give all the people who don't want to look at cartoons or jokes a means of filtering them out.
Update #1 - Some 'soft' topics can now be asked/discussed on Programmers - StackExchange
Programmers - Stack Exchange is for expert programmers who are interested in subjective discussions on software development.
This can include topics such as:
- Software engineering
- Developer testing
- Developer tools and techniques
- Practical algorithms and data structures
- Design patterns
- Development methodologies
- Quality assurance
- Software law
- Code golf & programming puzzles
- Freelancing and business concerns