Does chrome put in anything to protect against developers spamming notification center? I can just imagine putting a couple hundred of these throughout time square and making everyone really hate chrome for ios.
@tashoecraft: Google did here a really elegant design. URLs from beacons are not rendered in the browser directly (it's not the device that resolves URL or fetches description). There is a Google service based on Google Search doing that and then data are rendered in the browser.
We expect this is how Google is actually planning to prevent spam. Before they present anything in the browser for the user, they might filter that and/or rank, same way they do it with links in the search.
It's not spamming notification center. Whenever the beacon signal is heard the information about it is shown in Chrome widget, but you still have to manually go there to see it. If you ignore it and move away from the beacon it will simply disappear.
A better solution is to turn BT off :)
Also, see the above comment from jimiasty about Google ranking/filtering the URLs before it shows them in the widget.