The police in the UK actually have a map of all crimes that have taken place recently in a neighbourhood [1], I think this is a better way of going about the issue, crime rates seem to correlate more closely to safety than how a place looks, I think.

[1] http://www.police.uk/

I think you fail to understand the point. The point is not too replace a map of crime, but to help develop variables that can help explain the location of crime. Look at what they did in their 2013 paper (http://pulse.media.mit.edu/papers/) that is exactly that.

The problem they are trying to solve is that there are no good measures of perception to evaluate whether the environment affects crime or not. This is an old question for which there has been much research, as it is explained in the point 7 of their FAQ. http://streetscore.media.mit.edu/faq.html

You can, of course, configure the coffeescript compiler to output a more readable compilation output.

I had this problem too, Turns out I have the HTTPS Everywhere plugin for chrome so the page loaded over HTTPS, so mathjax wasn't allowed to load as it was loading from a plain HTTP server

Aha, I'm also using HTTPS Everywhere. Thanks.

Personally, I find that eBay (at least in the UK) has proven itself to have the best shipping, selection, service and price. Especially with it's new "Fast and free" promotion