Advanced Fiction Writing By far the most useful site I’ve found. Randy Ingermanson is famous for his Snowflake Method (which you’ll find here) but more importantly, visit his blog. There are daily interactive conversations going on everything from how to write a scene to how to get an agent.

Holly Lisle Fantasy writer Holly Lisle shares her wealth of knowlegde and experience in several dozen great articles.

Hatrack Orson Scott Card’s website, with great writing articles and an even greater ongoing writing workshop.

SFWA Resource Page Many great articles and resources.

Where the Map Ends Writer and Editor Jeff Gerke’s megaportal. Most useful is the Tip of the Week section.

Ursula K. LeGuin Science Fiction and Fantasy writer LeGuin’s personal site has a small collection of writing gems.

NaNoWriMo Contest, adrenaline shot, megaportal, forums.

Writer Beware Know who you’re dealing with.

Writing.com The biggest megaportal I’ve found. 

My Writing Mentor Blog by writer Tricia Goyer with quotes and useful tips.