Affiliate advanced settings - url validate or not ?

Hi,

On the "affiliate advanced settings", i choose to no-activate URL validator.
So, an affiliate can validate his url without checking.

But what happens if an affiliate input an url like "google.com" or "facebook.com" or the main blog url ?

Maybe it's better to activate the url validation in config file ?

Thanks for your help.

Cheers,
Bertrand