Test it for yourself: 1. Install Firefox 2. Open Firefox and solve a ReCaptcha 3. Install Chromium 4. Open Chromium and solve a ReCaptcha Notice the differ

Test it for yourself: 1. Install Firefox 2. Open Firefox and solve a ReCaptcha 3. Install Chromium 4. Open Chromium and solve a ReCaptcha Notice the difference between Firefox and Chromium? Google's ReCaptcha is gracious with Chromium/Google Chrome. You can even make mistakes and it still valid. With Firefox (and maybe other) browsers on the other hand... why not increasing the difficulty/challenge for them? -.-