One of the most annoying things when you have a website is that you think you have just received a new lead and a chance to sell and it turns out to be spam! Someone asking you to buy some search engine optimisation (SEO) service in Bulgaria or something (you would of course only use James Blake Internet!!!)
One of the easiest way to stop this is to use a CAPTCHA on your website. This is where you go to register on someone’s website and they ask you to copy the letters and numbers before you press submit. Can be annoying for the user but very important as it shows the company that a human and not a computer actually entered the details and the lead is likely (hopefully) to be genuine.
CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text but most computer programs can’t:
The term CAPTCHA (Completely Automated Public Turing Test To Tell Computers and Humans Apart) was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas Hopper and John Langford of Carnegie Mellon University.
CAPTCHAs have several applications such as
• Blogs – Most bloggers are familiar with blogs that have bogus comments, mainly to help them get search engine ranking. With CAPTCHA spammers are prevented and you can even avoid registration before use.
• Website Registration. All forms and sign-ups that are free should have CATCHA to keep only genuine users signing up !.
• Online Polls. Without CAPTCHA these polls can be easily manipulated. For example in this election if a poll without CAPTCHA asked the question “Who is going to win this election?” Each party could in theory build programmes to keep voting..
There are many other CAPTCHA implementations, some better than others. Please speak to us at James Blake Internet (JBI) and let us guide you