Permission.site
Absolutely blown away by the number of things you can do from a web browser these days. All of this would've been unimaginable a mere 10 years ago, right around the time when Google Chrome was in its infancy (or just out of it, to be precise) and the web browser market was still dominated by Internet Explorer, with Opera, Firefox and Safari (back when there was a Windows version of Safari) taking up small slices of the market share.Another cool site to check out: https://coveryourtracks.eff.org -- a great tool to see how unique your browser's 'fingerprint' is and how well it protects you from trackers and other annoyances online.