It’s non-marketed (non-paid, non-promoted and often deleted at request of KeyCAPTCHA Team) point of view on keycaptcha.com services.
Judge yourself.
I am only citing the publications of others (to which I have no relation or involvement) or easily verifiable on the internet data.
I even do not publish my info on keycaptcha.com scams as insider (and former employee) of keycaptcha.com
Antispam KeyCAPTCHA.com is being reported as known spammer:

Keycaptcha Unpublished from JED (oomla Extension Directory) for Fraud
KeyCAPTCHA plugin contribution is unpublished from:
It is not true that KeyCAPTCHA is unbreakable by bots,
as it is being affirmed by keycaptcha.com marketing publications, it is just not being hacked on unpopular web resources. Tthere are hundred of publications debunking KeyCAPTCHA’s invincibility:
KeyCAPTCHA being Uninstalled and Replaced by Other Antispam Solution(s) on hundreds webresources due its to technical or usability problems:
Source: http://twitter.com/#!/luxEffect/status/79158049574617088
.
Non-Usability & User Un-Friendliness of Interactive CAPTCHAs
No support of the blind users.
And interactive captchas cannot support the blind.
Might be this is my lie and slander but I could not find any publications proving the opposite.
.
Users’ feedbacks about KeyCAPTCHA:
LOL:
“I love puzzles. I made 9 accounts!”
Cited from: http://ww.reddit.com/r/WTF/comments/exa5e/i_think_this_is_genius_but_i_cant_be_certain/c1boo5w
Gennady
former KeyCAPTCHA Team member
caught by police in cooperation with my former employer (KeyCAPTCHA.com Team) for receiving my salary qualified as extortion
55.039230
82.927818
Debunking KeyCAPTCHA Myths (3d-party publications)
It’s non-marketed (non-paid, non-promoted and often deleted at request of KeyCAPTCHA Team) point of view on keycaptcha.com services.
Judge yourself.
I am only citing the publications of others (to which I have no relation or involvement) or easily verifiable on the internet data.
I even do not publish my info on keycaptcha.com scams as insider (and former employee) of keycaptcha.com
Antispam KeyCAPTCHA.com is being reported as known spammer:
Source (in Russian) with the list of spamming Emails/services:
http://vkontakte.ru/wall109343155_2583
http://joomlaforum.ru/index.php/topic,138180.msg882437.html#msg882437
Keycaptcha Unpublished from JED (oomla Extension Directory) for Fraud
KeyCAPTCHA plugin contribution is unpublished from:
It is not true that KeyCAPTCHA is unbreakable by bots,
as it is being affirmed by keycaptcha.com marketing publications, it is just not being hacked on unpopular web resources. Tthere are hundred of publications debunking KeyCAPTCHA’s invincibility:
If anything, it seems less secure than the reCAPTCHA or the Q&A methods (both of which are far from perfect, but seem to cut spam more than KeyCAPTCHA does).
I’ve been deleting spam posts and banning spammers all day for a couple of days now – hundreds of them – since installing this” http://www.vbulletin.org/forum/showpost.php?p=2180505&postcount=40
http://webbonews.ru/vzlom-interaktivnoj-captcha/
http://www.simplemachines.org/community/index.php?topic=413168.msg3042682#msg3042682
http://www.reddit.com/r/WTF/comments/exa5e/i_think_this_is_genius_but_i_cant_be_certain/
KeyCAPTCHA being Uninstalled and Replaced by Other Antispam Solution(s) on hundreds webresources due its to technical or usability problems:
http://twitter.com/#!/RootzWiki/status/84137528520744961
Source (in Russian): http://vkontakte.ru/wall-27039534_10
http://forum.xda-developers.com/showthread.php?t=1019885
Non-Usability & User Un-Friendliness of Interactive CAPTCHAs
And interactive captchas cannot support the blind.
Might be this is my lie and slander but I could not find any publications proving the opposite.
http://cheatingnetwork.net/forums/suggestions/91746-get-rid-spammers.html#post836727
“Apparently Keycaptcha isn’t working too well. I still suggest requiring like 10 posts to make a thread”
http://cheatingnetwork.net/forums/suggestions/91746-get-rid-spammers.html#post837912
http://twitter.com/#!/MattehFox/status/91255810654609409
“keycaptcha.com - holy shit”
http://twitter.com/#!/FabianBeiner/status/88969542017105920
“@RootzWiki I have been trying to register for 30min now and it wont let me, keeps telling me my captcha is wrong =/” http://twitter.com/#!/ECOTOX/status/84123162270380032
” @KeyCAPTCHA Ubuntu & Windows in Chrome, Firefox, & Internet Explorer on 2 desktops & laptop, put picture together but always said its wrong “
http://twitter.com/#!/ECOTOX/status/84177076537659392
“KeyCAPTCHA – causes me wild butthurt, been trying to pass it during 5 min in vain, no way”
Translated from Russian:
“KeyCAPTCHA – какой-то дикий батхерт доставляет, тыкаю ее уже минут пять, не выходит ни рожна”
https://twitter.com/#!/skurudo/status/76981537681321984
http://dle.in.ua/forum/topic_8534/#post-62364
LOL:
Cited from: http://joomlaforum.ru/index.php?PHPSESSID=7df383cdc3a55a15eef9216adcc90064&topic=138180.msg752789#msg752789
“KeyCAPTCHA радует” http://twitter.com/#!/Bazulja/status/17691086226980864:
Gennady
former KeyCAPTCHA Team member
caught by police in cooperation with my former employer (KeyCAPTCHA.com Team) for receiving my salary qualified as extortion