Check out this great this great web application that allows you to create flash cards online. You can then use them for studying solo or collaboratively with your friends (CoBo Cards is short for Collaboration Cards). The cards are interactive and can include images. They are also printable. This app is available for the iphone and droid so you can study on the go, too! If you need them, there are detailed tutorials to get you started, plus tips, possible uses and a FAQ section.
CoBo Cards has gotten good reviews. Notable among these reviews are three from Tech –Ed bloggers Adam Pash at lifehacker, Richard Byrne at Free Technology for Teachers (You should be following this blog!) and Jane Hart at C4LPT (Centre for Learning and Performance Technologies).
Here is an video introduction: