One of the most annoying things about running a website of ANY sort is the amount of SPAM you have to deal with.
If you are running a BLOG, then your comments will be constantly bombarded by spam-bots, or poorly disguised written spam attempts. If you have a Contact Page, then you will receive hundreds of SPAM service offers - usually people telling you how to run your webpage.
How to stop it?
Many Websites opt for some form of CAPTCHA (Completely Automated Public Turing Test To Tell Computers and Humans Apart) which usually involves some form of puzzle you need to solve or a pictorial 'pick all of the traffic lights' type of test.
The trouble is these are often difficult to decipher & can be annoying to your visitors if the answer is incorrect.
Well not anymore ... a new service is proving to be extremely popular with Website Operators & their Visitors - CleanTalk is a new Cloud-based protection method that is invisible to your visitors and just WORKS!
automatic and invisible protection from spam for websites.
When installed on your website the Anti-Spam Module captures the behaviour parameters of a visitor or a spambot. These parameters are being assessed and the service makes a decision — to post the visitor's message or to define it as spam and reject it. Based on such checks, the service forms its own list of email addresses used by spambots. Likewise visitor registrations are being checked too. The service adds not only email addresses to the blacklist, but also IP addresses and domains of the websites that are promoted through spam mailout.
There is a free trial version available, but at $8.00 per year (and a multi-year discount), I recommend just paying the small yearly fee ... The time it will save you & your site visitors is recouped in a day!