A fascinating diagram showing developer contributions to the open source core of the Elgg project (used here on the Landing) over the past 5 years or so. Quite fascinating to watch, and especially pleasing to see how the number of contributors has grown over the past year or so, probably as much due to moving to Github from Trac as anything else, though the great work of the Elgg foundation team in building and employing the work of the community goes hand in hand with that. Makes me feel quite a lot more secure about the future of the technology to know that so many people are active in pushing it forward. It would be intriguing to look at the larger ecosystem of plugins that sits around that using a similar visualization.