I've never particularly cared for ANY questions that are completely irrelevant to actions/results on the field in events that actually count in the standings or have some win/loss significance. That's why I have never bothered to retain spring training sites, uniform numbers, host cities/sponsors for tourneys, bowls, etc.
By my thinking, that Bob Waterfield jersey number question is no better or worse than asking about spring training sites. And yet people would have no qualms about getting those types of questions sprinkled in year round. That's why I just take it like a man this time of year and hope the baseball season starts ASAP so I can start getting clobbered over the head with football training site questions in a couple of months...