At ISTE, I had the pleasure of presenting in the Google theatre on Writing with Google Docs. It was a short presentation aimed at demonstrating how educators can use Google Docs to foster writing in its various stages.
Narrative, expository and argumentative writing are required writing genres in the CCSS. I particularly appreciate the writer's list of contemporary writing activities that provide many different forms within writing genres, especially with respect to social media and online writing, which many of our students will be expected to do in college/careers.
As a bonus, many of these work well with schools that have rolled out 1:1 or iPad programs. Plus, students seem to engage with technology. It's not what you use, but how you use it.