I can't see how these appraisals can be of any real value.
Nameboy tells me one of my domains
http://www.qusk.com/ is worth $14'594.
The same domain at
http://estibot.com/ gives it a value of......$80.
http://www.domaintops.com/ says $76.
Hmmm.
A rather large difference, but it was exciting for a moment.
