There are plenty of lists of helpful/interesting writing websites out there on the Internet. This page is a work-in-progress: a list of websites that I used in my writing process. It will be updated as I go along.
NaNoWriMo: the kick in the pants I needed to write the rough draft for Watermark
Writers Digest: a cornucopia of resources for writers, ranging from contest announcements to troves of articles about technique and craft.
Science Fiction & Fantasy Writers of America: because I gravitate towards the fantasy genre. This site has a lot of advice tailored to science fiction and fantasy writers.