TheOptimizationIdiot - 4:51 am on Mar 16, 2013 (gmt 0)
I would go with what tedster says in almost every case. The only difference I would have that doesn't seem to apply in your case is if there may be new information on the topic with substitute information present currently, and then while the current information is "not the right answer" I use a 303 See Other.
Other than some "edge cases" I think what tedster says about leaving them alone is the best advice I've seen.
An example of where I use a 303 is when there's a business location that was previously providing a service but isn't at the current time but may again in the future. In that specific situation I want to make sure if the location provides the service again I have communicated "the page redirected to is not an alternate for the information" but it's the "best answer I have right now", other than that specific case, I'd go with what tedster says.