I totally agree with you about captcha. Many times I have encountered the ones that are supposed to display photos that you choose to answer a quiz and the pictures end up not displaying with only a blank white box, so you are just stuck there. I don't mind where you have to type a word from a display box to combat BOTS but that's it, I don't want to have to do that everytime. Remember that captcha is run by google garbage as a service for webpages, but they also use it to track you.