"News: October 27th, 2009 -- Storymarks, our fanfiction bookmarking feature, has returned. We disabled the feature more than a week ago due to inconsistent operation reported by many users. We have since redesigned the feature internally to make it compatible with more web browsers. As always, please report any issues to ..." - fanfiction.com
I think you should recheck your account they have redesigned the feature if it is not still working then contact them through their email given on the site..
I think you should recheck your account they have redesigned the feature if it is not still working then contact them through their email given on the site..