Help! I need ideas about how to recruit attendees for a Global Learning Reception...

Hi All,
Lisa Nielsen suggested I ask this community for help. Our middle school is hosting a Global Learning Reception on June 9th, and we want to get the message far and wide. Our students and teachers will be presenting projects (theme of "Connections") on the Internet. We need ideas for how to best recruit a worldwide audience to sign up and virtually (or physically) attend on June 9!
Thanks,
Jason

The site is here:
http://339dottodot.com
Email to: 339dottodot@gmail.com