I'm working with the SE data dump and am interested in voting patterns and answer contributions over time. I know it is established that the majority of questions are answered well (or at least to the questioner's satisfaction) in the first couple of days or even hours, but I note that about 2% of questions receive good answers and a lot of votes much later. I would be interested to hear your views as to why this is - is this an organic process or do new answers receive a boost somehow?
(full disclosure: this is for my PhD research - contributors to this Q will be acknowledged!)
update Here are a couple of examples (Still working on the graphs, so not yet perfect). Each color represents a different answer. Looks like some of the questions were almost before their time, the subject popularity only peaking later on?