Greasy Fork is available in English.
Alerts you of potential sexual predators on OkCupid based on their own answers to Match Questions patterned after Lisak and Miller's groundbreaking academic work on identifying "undetected rapists."
< Feedback on Predator Alert Tool for OkCupid
Additional note: When the creepshield lookup _does_ work, it's pretty terrible. It's a good idea, but the images it has to work with are fairly terrible low-res mugshots and the facial recognition algorithm yields awful results.
Three things.
First, the site that provides the facial recognition matches is CreepShield.com, not FacialNetwork.com.
Second, after three anonymous searches, you can simply reload the page to get another three anonymous searches.
Third, the plugin does a lot more than just facial recognition matches against the US SRO database. This article about the tool provides a more thorough explanation: http://days.maybemaimed.com/post/94938074685/learn-more-about-your-date-before-its-too-late-weekly
Relies on 3rd-party site that doesn't work
Relies on facialnetwork.com to compare every profile pic you look at against a db of predators. That's fine, but it happens automatically and you only get 3 anonymous lookups. After that, you get a popup asking you to log in, and logging in via email resulted in an infinite redirect.
If the profile pic lookup could be disabled, that'd help.