I don't like the google captcha on clicking the pictures requested by google as the pictures provided are sometimes buggy and I have to do it a few times to clear the captcha, and since freebitco.in provide an alternative captcha which is solving the wording captcha, I used that option as solving the wording captcha is easier for me.
Which I feel the same. I mean getting frustrated with a broken recaptcha for 300 sats sometimes make me feel uninterested to solve it again.
I think you just can keep on refreshing it right? So it wont be a problem at all. There is nothing like unsolved captcha right? For now this one is better rather than ask us to put the some words, sometimes words really trick my eyes, even no one can answer it when I ask everyone in my house. Pictures will be better, may be just some minor bugs that let us keep on clicking the same thing over and over
I think a better solution will be have both recaptcha and the current one and let user select with one they like to solve, perhaps it can be implemented and users can save setting by going to their profile?