At OTA our keynote speaker Kenneth Shelton (http://kennethshelton.net/) created a lot of Google Forms. People in the audience would respond to questions through the form and the answers would be automatically populated. No need for respondents to log in. Just go to the website and type in answers. Easy to do from a mobile phone with a QR code showing a Bit.Ly link. Most everyone in the audience used a phone or tablet with a few of us on laptops.
In one instance he showed a photograph of a skater. Everyone wrote what they saw. He went to the spreadsheet for the form and copied the text. Kenneth then went to the WordSift website (http://www.wordsift.com/) where he pasted the text. The words shown on the screen as a word cloud. There is a button on WordSift to create workspace. This allows the user to pull down words to highlight features. There is also a cool thesaurus built into the site.