How can I make a URL look unique?
For technical reasons, certain URLs within ClickMagick—for example a Rotator Backup URL—must be unique and not be used anywhere else.
If you need to use an existing URL somewhere else that requires a unique URL, you can make any URL unique-looking by simply adding a random “query string” to the end of the URL.
For example say this is the URL you want to use, but it’s already being used somewhere else:
`http://www.mysite.com/welcome.html`
You can make the above URL look unique—without changing its functionality—by simply adding a meaningless query string to it, such as `?foo=1`:
`http://www.mysite.com/welcome.html?foo=1`
If the URL already has a query string, you can simply add another `&name=value` pair to the end of it to create a unique link. For example, suppose you already have this link which has the existing query string `?newvisitor=yes`:
`http://www.mysite.com/welcome.html?newvisitor=yes`
In this case you’d just add an additional query string parameter to the end like this:
`http://www.mysite.com/welcome.html?newvisitor=yes&foo=1`
Adding an extra query string parameter doesn’t change the functionality of the link in any way, but it does make the link appear to be different.
Tip: For a quick overview on query strings and how to add or modify them, check out this FAQ:

|  | What is a Query String?