If you are a friend of open source, the IDG World Expo Corp. will host the 2009 Open Source World Conference on August 12  and 13 in Moscone Center, San Francisco. There will be there events in one conference: The 2009 OpenSource World™, Next Generation Data Center™ (NGDC™) and CloudWorld™ conferences.

You can register this event at http://www.opensourceworld.com/. The registration is free.