I played with Zoho Writer and GoogleDocs a little bit this week - I tried to publish a table on dancing librarian to accompany the "Parallels" blog. Here is what I found: GoogleDocs were easier, more intuitive to use; but it was far easier to publish to my blog through Zoho. It seemed I had more to learn about the Zoho editor, whereas GoogleDocs felt closer to the Microsoft tools I currently use. Both would require more learning time on my part; I am more inclined to go to GoogleDocs just because of name familiarity.
However, when a teacher told me how she had just finished creating a massive spreadsheet encompassing all the vocabulary which needed to be taught through the year and I told her that GoogleDocs would allow her to upload it to the Web so that she could view it easily at school, she said she relied on her flash drive for that. Don't know how she would feel about having this info exposed to share with others.