markzuckerberg's Guestbook

Today we're announcing Portal -- a new kind of device that makes video calling feel a lot more like hanging out. Portal uses an AI-powered Smart Camera and Smart Sound technology to focus on whoever's talking even across a room. It's hands-free, voice-controlled and has Amazon Alexa built in. You can use it to call anyone on Facebook Messenger so you can connect with friends and family even if they don't have Portal. It has a nice big screen -- there's a 10" version and a 15" version" -- so it's great for feeling like you're right there with someone. Our girls use Portal to call their grandparents before bedtime so they can read books together. Portal is great for this because they don't have to hold a phone or tablet and the AI camera just naturally keeps them in the frame no matter where you are in the room. Our girls don't use a lot of screens yet, but we're happy for them to do video calls to see their grandparents or so I can see them when I'm traveling. Privacy is built deeply into Portal. It comes with a physical cover for the camera and there's a built in hardware button to turn off the camera and microphone. We don't listen to, view, or keep the contents of your calls in any way. Your calls are always completely private. We've been working on this for a while and I'm excited to share this with you now. I think a lot of people who do video calls with family, loved ones, or significant others will love this product as we do. Portal will begin shipping next month in time for the holidays, and it's available now for pre-order at: http://portal.facebook.com

Priscilla's challenge: run a 30 minute 5k before I run a 20 minute 5k.

Max's first running race. Priscilla ran the Stanford 5K for Heart Health (and got a new personal record!) Then the kids all dressed up as super heroes and ran 200 meters. It was chaos.

Happy 4th of July! Celebrating by taking Max on a long kayak ride and teaching her about freedom.

Our 13th data center will be built in Eagle Mountain, Utah. All our new data centers are powered with 100% clean and renewable energy. As important as using renewable energy is using as little energy as possible. So today we're making our data centers more efficient with a new cooling system we've helped develop that will reduce the amount of water our data centers use to cool servers by more than 20% in hot climates and almost 90% in cooler climates. This new technology will allow us to build data centers in places we couldn't before -- helping us support more jobs and our growing community around the world.