To prevent abuse it would pretty much have to be pull based.  Your area would be a website you own and control, which would have a process that on some activation polled feeds from your friends and aggregated it together for your use.  Your friends might be able to hit your wall and see you do that for others; you&#x27;d control what you shared via that action.<p>The reason that will not happen is because the average user doesn&#x27;t understand their privacy, can&#x27;t easily get a location they own setup like that, and doesn&#x27;t exist within a web of trust (which you could roll out with this via a public key system).<p>Maybe those problems will be solved someday when server time is so cheep that it&#x27;s a shock if someone doesn&#x27;t own a VM which the law would treat similarly to an apartment.