For many years now, the Northography site has sought to create a way for Minnesota writers to share and exchange new work based on a given stimulus, usually presented once a week. Occasionally, they've also held readings and other programs in the community, which I applaud, given that it's been particularly effective reaching out to those outside of the immediate Twin Cities area.
Northography has proven to be a great way to jog the creative juices and flow for many in Minnesota. It may not work for all writers, but I think the community of writers involved are well-knit. Some of the work I've posted at Northography has gone on to be part of larger projects. It took a brief hiatus in 2009, but it's back now and I look forward to seeing what's contributed in the future!