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blog

Definition:

Blog is short for "web log" and represents a sort of online journal for an individual or business. Some people use blogs to give their personal reviews on the latest book they read or movie they watched. Others use it like a diary to express whatever is on their mind at any given time or to tell you what they had for breakfast that day.

Blogs have grown wildly in popularity because of the free-form, no rules nature of the writing and the fact that anyone can have their own blog. Most blogs also allow you to comment on what people write thus inviting social interactivity on the blog.

By nature, blog sites are relatively easy to set up. Popular blogging sites include WordPress, Blogger and Xanga although there are hundreds more. Web sites such as MySpace and Facebook were probably once considered blogging sites but have developed into much more intricate social networking sites.

Here's a word you may not know...

CAPTCHA

CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart and is a spam prevention tool used on Internet web sites. CAPTCHA commonly appears on blog sites as a series of random letters or numbers, sometimes with a squiggly line through them, that a human must replicate before submitting a comment on the blog site.

This extra step of human intervention prevents malicious robots or scripts from automatically submitting spam comments on a blog without the author's permission. In theory, CAPTCHA numbers and letters are unreadable by computers meaning a comment can only be submitted if a human verifies the numbers and letters.