Five years ago Paul Rademacher reverse engineered Google Maps to put Craigslist homes and rentals on a map on his site. The site essentially pre-launched the map mashup category, because there was no Google Maps API at the time. Now it is the prototypical example and still used by many to find their new homes. And, of course, Google Maps is now by far the most popular API to use.
As we sit here in Seattle fighting the snow and ice this week, I find myself looking at a lot of maps. Weather maps that show that the snow will, in fact continue to fall, neighborhood maps to see what others stuck at home are tweeting about, and even maps of warmer places because one can always dream. We took a look at some of our favorite mapping mashups over a year ago so today is a good time to see what is new.