@mayank is right, when you get popularity you are EXPOSED, and every developer could be able to spam your système without that much effort. Captcha are Effectiv

@mayank is right, when you get popularity you are EXPOSED, and every developer could be able to spam your système without that much effort. Captcha are Effective even if they are EVIL, anyhow i think that one day we'll find a viable solution again's spams.