SEO Tools/ Automatic Link Exchange Softwares: Are They Useful or Not?

There are wide varieties of SEO tools available on the net, somewhere around thousands of them, but the real question is whether they are useful or not.

Many SEO companies have developed different tools to boost your rankings on the internet. Some of these tools are good but can also be dangerous sometimes. For example, suppose you have a website named www.abc.com, and you install automatic link exchange software on your web server. It could be possible that your website