per+convention

media type="custom" key="11260296"

http://tippingpointlabs.com/2010/11/22/10-tips-to-help-master-prezi/

http://www.slideshare.net/thewikiman/how-to-use-prezi-and-win

http://www.presentermedia.com/blog/2011/10/animations-for-prezi/?gclid=CLC057mArawCFQRTfAod4lzbGw