I think that OF COURSE a cheat should be allowed as an answer. But, unless the question is "How do I cheat on X?" a cheat should never be the accepted answer. Of course, we cannot control the community, but, we can make comments, votes, and suggestions to help people make the right decisions.
For example: "Is it possible to get Splinky to do the funky chicken?"
A quality answer could easily be:
No. This is not possible. Only Zippy has that power in-game. There is, however, a cheat that enables this:
Mash your face into computer keyboard until every key has been pressed twice
Hit Enter 37 times
I also think we should use comments to encourage people to post the sources of their cheats.
There have been occasions where things have been presented as cheats which have deleterious effects on people's games, etc. I think this is especially true of mods, but that perhaps is a whole separate discussion.