What happens to your site when 3rd party sites are down
Example 3rd party scripts are those you include for social buttons like Facebook Like, Twitter, Google+ etc
Sites do go down. Even big ones. Or they fail to load for other reasons (e.g. corporate firewall blocking). You don't want your site to go down when a third party goes down.
// You want:
your outage = your outage
// as opposed to
you outage += Google outage + FB outage + Twitter outage + LinkedIn + .....
The list of recognizes script include:
The extension stays dormant until you click the # icon. Then the extension starts listening to requests and blackholes the recognized ones. It shows a badge in the icon with how many scripts were blackholed and on mouseover shows you the URLs.
Regarding the name... 3PO = 3rd Party Optimization. And #fail is kinda obvious.