It's possible that they are refering to tools that will automatically browse a site and click adverts..... these tools are highly against all ad-network terms and conditions.... they are also highly immoral and most probabally illegal.
The will doubtless increase traffic on your site but ask yourself.... is an automated application really interested in your services / products?
..... I think not....
What you need is a good deal of
SEO work on your website to bring in real traffic... real people... with real money to spend..... targetted traffic is the key.
Poor quality traffic just costs you money.... they dont buy... they just zap your bandwidth.
You need quality traffic.
Would you rather have 1 million visitors who buy nothing, or 100 interested visitors where you can convert 10% of them?