DatingDefender is a free add-on and tool for the Chrome browser that aims to help users detect fake profiles and scams on OKCupid. Developed by op2600, this program is fully self-contained inside the OKCupid site.

With DatingDefender, users can receive alerts if any suspicious activity occurs on their OKCupid profiles. The add-on alerts users if keywords such as "skype," "text," "name," or any email are mentioned, in order to help them avoid divulging personal data. Additionally, DatingDefender will also alert users if their profile seems bot-like in nature.

One of the key features of DatingDefender is that all alerts are displayed natively within the OKCupid site, ensuring that users do not miss any important notifications. It should be noted that these alerts are not traditional pop-up notifications, but rather integrated within the site itself.

Please note that the profile scam checker has been fixed on the new OkCupid site as of version 2.4 of DatingDefender.

Overall, DatingDefender is a useful tool for OKCupid users who want an extra layer of protection against scams and fake profiles.