The 5 blogs that make me think are:
Charis Connection - a wonderful blog where several published authors share five days a week inspiring and informative writing advice, specifically for the Christian writer (though all can benefit, really).
The Writing Life - W. Terry Whalin's blog on writing is a wonderful resource for all writers. As a writer who's been an editor and is now a literary agent, Terry always has something interesting to share.
Keep Me In Suspense - With articles specifically for suspense writers, I've found great tidbits here on police work, lawyers, and more.
Novel Journey - Every day a new author interview is posted, and the weekends have devotionals and book news. I've been following this blog from its beginnings.
My Writing Mentor - This blog is really just what it's title suggests: a place where writers can be mentored and ask those burning questions we all have! Very encouraging.
I could share more, but I'm supposed to keep it to five. Enjoy!