I will admit, at times I am tempted to post questions just so that I can show off some of my creation that I think are neat, while farming reputation at the same time.
This seems like it will be a problem because it trivializes the questions themselves, making it less likely for the answers to be generalized for the use of others.
That being said, perhaps a well-contrived question can still save the post from being purely exhibitionist and creation-specific, even as a mean to an end.