We are trying to make it easier to draw, change, and publish maps. Some of the most important geospatial data is the information we know, observe, and can draw on a napkin. This is the kind of data that we also like to collaborate on, like collecting bars that have free wifi✎ or favorite running routes.
geojson.io aims to fix that. It's an an open source project built with MapBox.js, GitHub's powerful new Gist and GeoJSON features, and an array of microlibraries that power import, export, editing, and lots more.
The project is moving and improving fast - you can get in on the development process on GitHub and we'd love to hear feedback after you kick the tires. Stay tuned.