Walker
The walker function is mainly for generating cookies, but can also be used to increase views and other similar tasks.
What is the idea behind cookie generation? Sites like facebook.com are thought to track your online activity due to the fact that they have their own code on many third-party sites. When you authorize a new account, facebook checks it against its database. By building up cookies, it's like we're showing facebook a rich history of surfing the web, which in theory builds more trust on its part. It is important to make sure that the sites we are storing contain Facebook code, such as likes or comments from Facebook.
Clicking on the links will take random actions, such as scrolling the page.
Delay
Delay in seconds between link clicks.
Count
Number of links from the list that will be clicked.