1. Host a blog
2. Host a small private social network
3. Connect to my personal media server, streaming services, file server.
4. Monitor "smart" home. Car and other home utilities should be able to feed data into this PI.
5. Host alternate services for Google Keep, Calendar, etc,.
Currently my PI sits behind a NAT and can't be access through web. But I think it should be possible to access it form outside because my BitTorrent client works flawlessly. Can we create a similar PI network for discovery of other PIs and make them accessible from Internet? How would we go about building such a network?