Good news for those of you planning to attend Google’s I/O developer event – registration is now open. It will be Google’s fifth I/O conference and will be held in San Francisco’s Moscone Center on June 27th-29th. The event will let attendees find out more about the latest developments in web, mobile, and social innovations. They will also be able to meet the folks behind Google products such as Android, Chrome and Google+. Registration costs $300 or $900 depending on whether you’re an academic or a general attendee.