Thank you for using Upcoming! To help focus our efforts on core Yahoo! product experiences, we will discontinue Upcoming by 30th April 2013. You can find more details here
You *have* to register with our hosts Skills Matter if you want to attend the talks. The earlier you register, the better, as they will only book a large room to accommodate more attendees if they have the registration numbers to require it. But they need about a week's notice to do so!