We are not sure if it happens to all; but it is happening with us. We are getting some spam trackbacks from non-existing URLs!
Below is an example of such spam from a non-existing url:

Frankly, we have no idea about the motive of this kind of spams. The I.P. address are varied and so are the URLs.
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Is keyword dilution is the target of these type of spam or the domain will be hosted soon? Wow! Spammers now have started pre-launch spams!
