http://tomuse.com/top-10-free-web-conference-services/
看完之後，發現，都要你的叩叩ㄚ，沒關係，自己來動手做看看！
1. download @ http://sourceforge.net/projects/bigbluebutton/files/
2. make sure the networking is set to Bridged
3. Do below:
a. Setup BBB
sudo bbb-conf --setip lp588.dyndns.tv
sudo vi /etc/nginx/sites-available/bigbluebutton
sudo bbb-conf --restart
sudo bbb-conf --check
sudo bbb-conf --salt
b. Setup PPPOE
sudo apt-get install pppoeconf
sudo pppoeconf
sudo pon dsl-provider
plog
sudo poff dsl-provider
c. Setup DDNS
sudo apt-get install ddclient
sudo vi /etc/ddclient.conf
tail -f /var/log/bigbluebutton/bbb-web.log
#My slides upload but never finish converting!
sudo /etc/init.d/tomcat6 restart
sudo /etc/init.d/red5 restart
bigbluebutton Demo
vlpeng 