My Take
As a teacher of writing, I love that I can respond to student writing in either real time or at a later time. It also affords students with the opportunity to respond to each other's writing. Students are more motivated to write and revise because of this.
How I Use It
I use Google Docs during the writing process. Currently I have only used Google Docs when students write, but I am looking forward to utilizing the myriad of other choices. I also find extensions, like Dualles for split screens, to be an effective way to have students read and respond.