Blogs are websites where the content is organized by date and category.
When blogs were started, people still paid webmasters a huge amount of money to create a proper website. That prevented a lot of people from entering the Internet world.
When the WordPress blog was introduced, it made it much easier for someone to put up a blog.
The WordPress blog has become so popular that almost any hosting service has, what is called a cPanel. Within this cPanel you can find a “one click” method to install your own WordPress blog. Now anyone can have their own blog and have it up and running within a few moments.
To profit from blogs, you must have traffic to the blog.
A simple free page counter like StatCounter.com or Active Meter enables you to keep track of the traffic to your blog. When your blog has gained momentum and traffic has increased, it is time to turn traffic into profit.
You should use contextual advertising, like Google AdSense or Chitika. Contextual advertising is usually text links which use the content of your blog to publish targeted ads on your blog.