My husband first told me about Google Docs when it first came out. He is a teacher as well. He tired using it to collaborate with his fellow teachers especially when they were planning lessons together. Unfortunately, some of the teachers were not so savy with technology. I like how Google Docs allows you to share your papers with colleagues and receive feedback. It's fast and easy to use. I think if I worked with older kids, it would be a great way to use technology in writer's workshop. Students could write their comments on there. I could also see how it would be easier for the kids to revise their work.
Google Apps offer many things. There is something there for every user. Last year I was able to play around with Google Sites. Google Sites allows you to make a website offering pages and different layouts. I made a portfolio for my masters class containing all the things I learned in the class. I'm glad I did because over time, you forget the things you learn but now I was able to remember it all by looking at my site. Here is the link if you would like to check it out. Finley's E portfolio.
I always forget about all the things Google has to offer. It's important for myself and other teachers to go back and explore.