Most of the traffic comes probably from typo of ratemyface.com, it is picture rating traffic and this traffic makes very low profit. RPM$4-5 max. So based on this criteria, I would appraise it $10K.
BUT - it is intuitive, nice name, good i.e. for cheap cosmetic brand, than the value could be even low xxx,xxx. You should register myface.com as TM and wait, the right buyer WILL come and offer at least $50K.