The map-happy folks at Bostonography have updated their work on using crowdsourcing to solve that most vexing of problems: What exactly are the boundaries of Boston neighborhoods?
We asked people to draw boundaries for 21 Boston neighborhoods and have overlaid the resulting shapes (about 4,800 from 950 respondents) to measure the amount of overlap and calculate consensus within each neighborhood.
There's a mini-FAQ that includes this question: "Why is Roslindale so ill-defined?" They say it's mainly due to not enough data, but any Roslindale resident will tell you it's actually a valid question - pieces of the neighborhood secede to get higher property values, other pieces get lumped into city-council districts with Dorchester, we don't have any elected officials of our own, etc., etc.
H/t eeka.