I have also used Doodle personally to organise meet ups with friends when we needed to organise the best time and location for a number of people.
Over the years I've used google drive (or docs as was) to collaborate with others a few times and I've found it really useful to be able to work together without being in the same room. I previously took part in the Scottish Goverment Library's 10 things course which shares all documents via collaboration tools. I was also seconded for a term to a local secondary school and was able to see the classes use Google for education to great effect.
I do have a caveat to this though, I'm able to use collaboration tools because I do so from home. Colleagues who wanted to take part in the 10 things course were unable to do so due to unreliable broadband at home and a refusal from our council IT department to make Google Drive available on our corporate network for security reasons. I do believe we could use these tools very successfully in the workplace but we're currently unable to do so.
