Here is a list of teacher blogs with a focus on the teaching of Art.
Sarah Sutter EduEyeView
An art teacher's blog about art and technology.

Melissa Noack: Photo 1, 2, and 3 and Foundations of Art

Teaching Palette a blog for art teachers written by art teachers

Great ICT resources for art teachers
Here is a page of some great resources for art teachers. Although it is from a k-4 teachers blog some of these resources are very useable for high school teachers
Here is a great Art resources wiki heaps of great links and resources to explore! -Art Matters
For Fun try sprintsweets.