Joseph Porcelli, the well-known founder of JP-based NeighborsForNeighbors.org, is shutting down what he calls his "labor of love." Neighbors For Neighbors provided a platform for residents not only to connect with one another around shared interests, but also to organize to get stuff done. Porcelli kept the network going after he moved to Washington, D.C. several years ago. He said he'll shut the site down by the end of June. But at the same time, he's encouraging people to join Nextdoor.com, a national platform that shares many of the same goals Neighbors For Neighbors had.