If you install the Messenger app, you should see a screen letting you know that the app is asking for your permission to access information or use features from your Android phone or tablet. Almost all apps need certain permissions to run on Android, and we use these permissions to help enable features in the app and create a better experience for you. Keep in mind that Android controls the way the permissions are named, and the way they’re named doesn’t necessarily reflect how the Messenger app and other apps use them.Below you'll find a list of some of the permissions we currently request for the Messenger app on Android, as well as an example of how we use each one. This list is meant to give you a better understanding of how we use these permissions, but it doesn't include all of our uses of these permissions. If you've already installed the Messenger app, you can find a list of the permissions the app uses in your phone or tablet's Applications Manager, or by visiting the Play Store and clicking View Details under Permissions.Note that the names of these permissions and how they're displayed on your device may differ depending on what version of Android you're using.

Android permission (what you’ll see on your Android phone or tablet) and examples of what we use this permission for: Take pictures and videos: This permission allows you to take photos and videos within the Messenger app to easily send to your friends and other contacts. Record audio: This permission allows you to record and send videos and voice messages and make voice calls within Messenger. Read your contacts: This permission allows you to add your phone contacts as Messenger contacts if you choose to do so. You can always stop syncing your phone contacts by going to your Messenger settings. Directly call phone numbers: This permission allows you to call a Messenger contact by tapping on the person's phone number directly from the menu of your conversation with them. Receive text messages (SMS): If you add a phone number to Messenger, this allows us to confirm your phone number by finding the confirmation code that we send via text message.

http://www.snopes.com/computer/facebook/messenger.asp

http://globalnews.ca/news/1497260/is-facebooks-messenger-app-as-scary-as-it-sounds/

Bitcoin is a new currency that was created in 2009 by an unknown person using the alias Satoshi Nakamoto. Transactions are made with no middle men – meaning, no banks! There are no transaction fees and no need to give your real name. More merchants are beginning to accept them: You can buy webhosting services, pizza or even manicures. Bitcoins can be used to buy merchandise anonymously. In addition, international payments are easy and cheap because bitcoins are not tied to any country or subject to regulation. Small businesses may like them because there are no credit card fees. Some people just buy bitcoins as an investment, hoping that they’ll go up in value.Bitcoins are stored in a “digital wallet,” which exists either in the cloud or on a user’s computer. The wallet is a kind of virtual bank account that allows users to send or receive bitcoins, pay for goods or save their money. Unlike bank accounts, bitcoin wallets are not insured by the FDIC. Though each bitcoin transaction is recorded in a public log, names of buyers and sellers are never revealed – only their wallet IDs. While that keeps bitcoin users’ transactions private, it also lets them buy or sell anything without easily tracing it back to them. That’s why it has become the currency of choice for people online buying drugs or other illicit activities. Bitcoin is a form of digital currency, created and held electronically. No one controls it. Bitcoins aren’t printed, like dollars or euros – they’re produced by lots of people running computers all around the world, using software that solves mathematical problems. It’s the first example of a growing category of money known as cryptocurrency. However, bitcoin’s most important characteristic, and the thing that makes it different to conventional money, is that it is decentralized. No single institution controls the bitcoin network. This puts some people at ease, because it means that a large bank can’t control their money.A software developer called Satoshi Nakamoto proposed bitcoin, which was an electronic payment system based on mathematical proof. The idea was to produce a currency independent of any central authority, transferable electronically, more or less instantly, with very low transaction fees.Who prints it? No one. This currency isn’t physically printed in the shadows by a central bank, unaccountable to the population, and making its own rules. Those banks can simply produce more money to cover the national debt, thus devaluing their currency.Instead, bitcoin is created digitally, by a community of people that anyone can join. Bitcoins are ‘mined’, using computing power in a distributed network. This network also processes transactions made with the virtual currency, effectively making bitcoin its own payment network.

http://bitcoin.com

http://en.wikipedia.org/wiki/Bitcoin

http://netforbeginners.about.com/od/b/fl/What-Are-Bitcoins-How-Do-Bitcoins-Work.htm