Something that falls in a gray area (example for the user who asked for it in response to this same message): Running a node for your profile on a peer-to-peer social networking site which leaves all of your data on your machine in your home, under your own control. It has to listen for connections, it has to be up nearly all the time, it would use almost no bandwidth, but it would compete directly with Google+ and prevent Google from data-mining your social networking data.
Or how about a similar thing for email. Your email remains on a machine in your home, but you can access it from anywhere. Uptime should be pretty much always.
Or how about a commercial scenario? You realize your employer has huge overhead, and that you could undercut their price and offer your skills directly to customers over the Internet. So you start using your home Internet connection to do business. Not running a server, but violating the noncommercial usage policy. Running a business connection would just artificially replace your employer with Google and raise your overhead until it matched the employers, protecting the entrenched centralized business model (which the Internet should be destabilizing and destroying).
Or how about a similar thing for email. Your email remains on a machine in your home, but you can access it from anywhere. Uptime should be pretty much always.
Or how about a commercial scenario? You realize your employer has huge overhead, and that you could undercut their price and offer your skills directly to customers over the Internet. So you start using your home Internet connection to do business. Not running a server, but violating the noncommercial usage policy. Running a business connection would just artificially replace your employer with Google and raise your overhead until it matched the employers, protecting the entrenched centralized business model (which the Internet should be destabilizing and destroying).