Set Referrer
From UBot Studio
$Set Referrer is a Settings Command in the Professional edition of UBot Studio.
This command will allow you to set the referrer url for whatever website you visit.
It will allow your bot to communicate with the website in order to let it know the url you are coming from.
Example
set referrer("http://www.tumblr.com/dashboard") navigate("http://www.whatismyreferer.com/", "Wait")
Running the scripts sets the referrer to the tumblr url.