Digital flashcards

Maybe I live under a rock.  Maybe I am the last person to find out about Study Stack, BUT just in case someone else out there doesn't know about it, I have to tell you about it NOW.  This is an interactive site that allows students to create (or use previously created) digital flashcards. The students can print them out, play matching games on the computer, use as digital flashcards and/or download to their cell phones or iPods.  A quick search shows me that a lot of the vocabulary for my textbook has already been created & is just waiting to be used.  I see names of other textbooks (in alphabetical order). Thanks again to @icpjones on Twitter for bringing this resource to my attention.