We've been working on some updates to Oakland Crimespotting recently and Mike released the first iteration today. The most significant change is a switch to base maps using OpenStreetMap data. We're using the Pale Dawn cartography that we (Stamen) designed for CloudMade exactly as it's intended: a subtle backdrop for data that still includes the richer local information that OpenStreetMap contributors (like Mike) cover best.
Other changes we've made include numerous small performance optimisations, new sliders in the marker info-bubbles, date labels on the timeline and the crime-type filters now double as a full legend. The whole thing has had a design overhaul too thanks to Geraldine.
We've got a few more features planned for release soon, and we've started a blog to keep track of new developments. Now is a great time to let us know if you have suggestions or feature requests! Feel free to leave a comment here or email firstname.lastname@example.org if you prefer.