A little while ago I asked a somewhat complex question.
I got some good answers fairly quickly and began investigating them. One recommended I try the jQuery isotope plugin and another pointed me toward an algorithm that could be implemented to achieve my goal. Both were good answers and after investigating I found that the isotope plugin was perfect for what I wanted.
When I went back to mark his answer correct it had been transformed into a comment. Why? And how do I now mark the answer correct since it no longer exists as an answer?