The other is an anoymous 'Guest' who identifies themselves on each review using a different set of letters and numbers. This person leaves 'reviews' that are also basically letters and numbers... These are the last 8 I've got:
By cunning deciphering, I've decided they're basically saying 'Very nice story', and as the reviews are more spread out and restricted to a single fandom, this person COULD actually be reading the stories, but if so why leave such random reviews?
Honestly, I'm starting to doubt the sanity of some of the people using ff.net. Both these spammers have more than a few screws loose.