WordSift is a tool that was created primarily for teachers. Mainly, think of it playfully - as a toy in a linguistic playground that is available to instantly capture and display the vocabulary structure of texts, and to help create an opportunity to talk and play with language.
"We intend for this site to be a central location for information on how to move your data in and out of Google products. Welcome. Click on any product link on the left hand side for more information on how to liberate your data from (or to!) that product."