This defines the format of the URL of a profile page, where {0} represents the username. For instance, http://twitter.com/namechk would be entered as http://twitter.com/{0}
{0}
http://twitter.com/namechk
http://twitter.com/{0}
Enter a string of text that we should expect to find on the page for a profile that doesn't exist.
Enter a username that you know is already taken.
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