Very Eerie but I liked it :D
I like Hikaa's (below) idea that the ending had a bit of a 'Ring'-like curse about it but not sure whether there was a killer in the first place to be concerned with. The important bit was that things wern't spelt out right in front of you and it kept you on your toes as to "what the hell!" was going to happen next :D
Overall I liked it and with a very creepy sountrack in the background.
Creepy animation too as it didn't need to be some uber detailed special effect fest to really make your neck hair stand on end!
I won't babble on too much longer now but a big (eerie) thumbs up from me ^^