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Obama to Address Surveillance and National Security in News Conference

President Obama will take questions from the news media on Friday afternoon, a day before beginning a weeklong vacation in Martha’s Vineyard that will be his last extended break from Washington before what is expected to be a contentious clash with Congress in the fall.

Mr. Obama is likely to face many questions about a recent surge of national security news, including a continuing terrorism threat that prompted the administration to close dozens of diplomatic facilities around the world and order Americans to leave Yemen.

Times reporters will provide live updates and analysis from the news conference starting at 3 p.m. Eastern time.

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2:34 P.M. Obama to Further Explain Surverillance Program

President Obama plans to announce new efforts to “restore public trust” in government surveillance programs that have sparked deep expressions of concern in the wake of revelations leaked by National Security Agency contractor Edward Snowden, a senior administration official said Friday.

The official, who declined to be named ahead of the president’s 3 p.m. news conference, said that Mr. Obama will describe new plans to “increase transparency” in the surveillance efforts. Read more

â€" Michael D. Shear



Bits: Happy Birth Data! A New App Tracks Fertility

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‘Like’ This Article Online? Your Friends Will Probably Approve, Too, Scientists Say

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Bits: YouTube’s Founders Challenge Vine and Instagram With New Video App

After months of teasing, the wait is over: Chad Hurley and Steve Chen, who brought us the video-sharing site YouTube, are taking the wraps off their newest project, a video creation app called MixBit.

Versions for Apple mobile devices and the Web will be going live on Thursday, and an Android version is due in several weeks.

On the surface, MixBit resembles two other leading video apps, Twitter’s Vine and Facebook’s Instagram. As with those apps, users press and hold the screen of their smartphone to record video. Instagram users can capture up to 15 seconds of video, a bit longer than Vine’s six-second maximum. MixBit allows 16 seconds.

But as the name suggests, MixBit is all about mixing and editing video. Both the app and a related Web site, MixBit.com, are aimed at making it easy to clip and stitch together snippets of video. Simple tools built into the app allow users to edit each 16-second clip and combine up to 256 clips into an hourlong video. The final product can then be shared on Twitter, Facebook, Google Plus or the MixBit Web site.

Think of it as “shoot, mix, share.” You don’t even have to do the shooting â€" the MixBit site allows anyone to snip and remix any publicly shared video content.

In fact, Mr. Hurley said, encouraging users to remix other people’s videos to create new works is the principal goal of the service, which is the first big product to emerge from Avos Systems, the start-up he co-founded with Mr. Chen two years ago. (The company has received funding from the venture arm of Google, which bought YouTube, as well as from Innovation Works, Madrone Capital and New Enterprise Associates.)

“The whole purpose of MixBit is to reuse the content within the system,” Mr. Hurley said in an interview. “I really want to focus on great stories that people can tell.”

The ability to create those more complex video stories could give MixBit an edge, at least momentarily, over Vine and Instagram, which are growing rapidly. Vine has no editing tools and Instagram introduced rudimentary ones on Wednesday.

In a recent interview, Laura Krajecki, chief consumer officer of the advertising company Starcom MediaVest Group, said that neither Twitter nor Vine were quite fulfilling the desire of young consumers around the world to play around with video, mixing and mashing their own work with that of others.

“Create an app that lets people edit it, and that’s where people are going to go,” she said, speaking generally of the market opportunity and not about MixBit in particular.

But one crucial decision by Avos is likely to hold it back: the app is totally anonymous and communal. Users cannot post their videos under a name, and they cannot comment on each other’s work.

A video produced using MixBit.

Showing off is a big part of modern Internet culture. The competition to create popular videos helped build YouTube into the powerful force that it now is, and it propels social networks like Facebook and Twitter.

“Everyone wants to be recognized,” Mr. Hurley acknowledged. He said MixBit would add identity features at some point.

But for now, it’s all about sharing, commune-style.

“We wanted to do that to first build a community within MixBit,” he said. “To see how that unfolds will be pretty interesting.”



Q&A: Locating a Missing Amazon Order

Locating a Missing Amazon Order

Q. How do I check on an order I placed with one of Amazon’s independent sellers if I didn’t get a shipping e-mail or tracking number?

A. You can check the status of any order placed through Amazon â€" even if it was with a third-party seller â€" in your account settings. To do so, go to Amazon.com, log in and click the Your Account link at the top of the page. Select “Your Orders” from the menu.

Your Amazon orders will be listed, starting with the most recent purchases, including those from independent sellers. Next to the order description are buttons for things like tracking information, product returns, reviews and seller feedback. There should be a button labeled Contact Seller if no tracking information for was provided.

Click the Contact Seller button to create and send a message to the person or company through Amazon’s Buyer-Seller messaging service.

If you are not satisfied with the response (or do not get one), you can file a claim with Amazon, which guarantees your order if it is not delivered â€" or arrives damaged or defective. Amazon has more information on third-party sellers on a customer help page.

Leaving a Facebook Group Conversation

Q. Is there a way to turn off a multiperson message on Facebook if I don’t want to participate anymore?

A. Facebook allows group conversations among two or more members, which can be useful for planning events and gatherings. If you do not wish to be included or receive notifications about a particular group message, you can unsubscribe from it. The other participants will be notified that you have left the conversation, however, so you cannot really sneak out.

To be on your way, log into Facebook, click the Messages icon at the top of the page and select the conversation you wish to leave. Click the Actions menu at the top and select Leave Conversation.

The same Actions menu also includes a Mute Conversation command. If you do not want to leave the conversation â€" but would prefer not to get a notification every time someone posts a new message â€" choose the mute option.