Sounds fancy but the thing is actually easy to do and brings a number of unique benefits. Just to make things clear let me give you a short definition of a referrer. A referrer is what the internet population calls a website from which a visitor came to your site.
Did you know? The original version of WordPress was numbered 0.71
The most common scenario for this to happen is when you simply forget your password. The real problem, however, is when (for whatever reason) your user account does no longer exist or it appears like this is the case. There are different steps you can take to solve this.