I know I'm alone in this, but I like reCaptcha, it's easier because it's in images, you simply click or touch the square like a game and it's done quickly, compared to the Black-Text captcha and Solve Media where I have to type the letters which is especially difficult when I'm using my phone. But after a while I'm able to adjust even to the Black-Text captcha which was a bit harder to see especially the 'i' and the 'l'.
I would also liked the reCaptcha V2 very much, way more than every other where you have to type something, but at the condition that it worked normally, without handicaps.
When I started with the faucets, I remember it took just a click and the green mark appeared. Today, is a looong gone memory.
In my experience and congecture, what I think Google does is, simply and foolishly, to increase the fail chance with the increase of frequency of use of the the widget. Doing so, Google associates an increase in frequency of use to an increase of possibility that the network is running automated queries.
That would be bad, but not so bad if the solving difficulty was increased, okay, maybe I have to suffer a bit more because I have to prove I'm no bot or because I'm consuming your bandwidth, uh?
The fact is that at some point, solving them becomes
impossibile, they fail even when you solve them correctly on all the slides and slow fading out tiles that are shown. I'm experiencing that in these days on freebitco.in, freedoge.co.in, the moon*, the bitfun and bitcoinbonus and on some dice site at the free faucet. The common line here is that I'm using them pretty much since the same amount of time and at high frequency during the day because as a developer I work at pc/internet most of day and sometimes at night and on Chrome only.
Today, I had the idea to change browser, try to go back to the sluggish shitty Firefox, and even if it lags with as few as 5 tabs open, well, I had no issue with the recaptcha, it's been a
miracle don't having to loose
minutes in front of that stupid popup and desperately refreshing the page. So maybe it need some cookie cleanup to reset this "virus".
I think admins of these site don't fully consider or take seriously this problem because they don't use, of course, this kind of sites themselves, so if they test them once in a while, they see the widget working perfectly normal because Google doesn't apply a free fail chance to a low frequency user. I would be suspicious of those sites that benefit from multiple page refresh when the captcha fails and you have to submit the page again, but I don't think this is the case, not for all of them at least, because some of them don't even have ads (freebitco.in)
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I found this video days ago in the official
google recaptcha discussion group (that is FILLED with complaints about this by the way), where a guy shows the issue pretty well:
https://www.youtube.com/watch?v=okMtR9Ex_5g