How sure are you that you are not spamming the search engines? You might have been using search engine spamming techniques without knowing it. Be cautious because intentional or not, search engine spamming results to a lot of search engine penalties. Search engine spamming defined and commonly used search engine spamming techniques revealed on this article.

Spam mail is an e-mail which is sent from someone else. It is considered a junk mail to internet users. One factor that leads spam mail to the internet users is when they leave their e-mail addresses in a Chat room. They might leave it on purpose such as leaving for contacting among themselves.

CAPTCHA or the Completely Automated Public Turing test to tell Computers and Humans Apart is widely advertised but one wonders if it is really useful or not. But, before we discuss its practical utility, let us see what CAPTCHA is all about. It is a test, which helps the computer to distinguish between machines and human beings. It creates and grades tests that automatically accept all humans and reject all machines.