The Captcha Monster
I like to follow other people’s blogs. Interacting with others is, after all part of the fun of blogging as sooner or later you get bored talking to yourself! Likewise I love receiving comments and commenting on other people’s blogs. To me a blog which does not accept comments is a dead entity. It may well contain interesting content but without the ability to interact with the blogger his/her site does, in my view lack a certain vibrancy.
One of the difficulties with allowing comments is separating the wheat from the chaff. My site receives a fair number of wheaty (have I just invented that word)?! Comments, however the blog also gets bombarded by chaff (spam)! Akismet (the spam filter used by WordPress) captures the overwhelming majority of junk mail consigning it to a dedicated folder where it can be reviewed by the blog owner. The beauty of Akismet is that it does not entail the person commenting attempting (often unsuccessfully) to solve a visual Captcha. Captchas are visual puzzles which must be solved prior to those wishing to comment or contact the site owner being able to do so. For a brief period I maintained a site on Blogger. Blogger employs Captcha and low and behold not a single comment did I receive on my site hosted there. Given that I receive a fair number of comments on my WordPress hosted site (which does not utilise Captcha) and I had none while using Blogger, I attribute my success in attracting comments (on WordPress) to the lack of Captcha. Unless a person feels extremely strongly on a given issue they are, when faced by a tricky Captcha likely to give up and move onto a blog where the Captcha monster is not lurking ready to pounce on the unlucky would be commenter!
As a blind computer user I have a particular detestation of Captcha. Screen reading software such as Jaws (the package I use to convert text into speech and Braille enabling me to use a standard Windows computer) only recognises text (it is not able to recognise images). Many sites have no alternative to a visual Captcha. Others do have audio alternatives, however most of these are, in my experience more or less unintelligible so, if you employ Captcha on your site you are, albeit unintentionally locking out many visually impaired people from the possibility of participating fully on your site.
As a blogger I do understand the problem posed by spam. Spammers are selfish individuals who ought to earn an honest living rather than spending their time bombarding site owners and e-mail users with solicitations for fake products. However spam is not going to disappear any time soon and we will continue to be faced with the issue of how best to minimise it’s pernicious effects. Given the existence of Akismet I can not see a valid reason for anyone relying on clunky old Captcha. If you must use Captcha then please choose a non-visual version. For example “prior to posting please add four and 3 and type your answer”. Such a Captcha can be read by screen reading software and is intelligible to the overwhelming majority of the human population. It also has the benefit of preventing automated spam bots from wreaking havoc by spraying your site with spam. Better still use a programme like Akismet which dispenses with the need for Captcha altogether!
