Some even say: "It doesn't work for me!". However, a request by me to see them log in usually fixes the "problem" in seconds.
Currently they are working through an 800 word assignment on a Social Issue related to Biology.
One of the big differences using Google Docs is that there is no set date to submit drafts.
I set up their 'files' and they can submit work at any time up to the final due.
Because Google Chrome has an 'add-on' called "WatchDocs", I get instant notification when a student is working on their assignment. I could watch them work on their assignment and even give them 'live' feedback - but only if they want it. It's overkill otherwise.
Anyway, I can check their work when I am able and I use the Insert:Comment function to give feedback.
Students who take advantage of this seem to find it useful.
Trouble is, at this stage, many of them have not.
Yesterday, after a session in class, however, I was able to give feedback in person and in written form whilst they were working on their Google Docs files.
I think a few more of them saw the advantage of doing this as they work on the essay over the weekend.
Time will tell...