I sometimes see questions asked on math.se. The questions are sometimes famous and the answers often do not explanation. Often these questions receive a disproportional amount of votes.
The particular question that stuck in my head was 'how many digits of pi do we currently know?'. I think this site encourages people to try to solve problems themselves, but such questions can often be easily answered by google. If I had this question, i'd google. Often the answerer lifted the answer off google too. I doubt many knows how many digits of pi are currently known, but many people on this site know how to find out?
A cynical way is that this is a cheap reputation hunt or badge hunt, but this issue aside, should this type of questions be encourages?
This applies, to less an extent, to questions like how do i 'prove A iff B', where A and B are very short statements. I'd much prefer the op found a proof on an online source and point out where they don't understand. Am i being unreasonable if i deem these questions distinctively lack research efforts, especially questions in the 'famous question google could have answered' category?