__Tethered Jailbreak

Tethered jailbreaks are frustrating because they require a computer connection to boot a jailbroken iOS device. The concept of a tethered jailbreak has been around a long time, but essentially it means this: every time your iPhone or iPod touch reboots or the battery dies, you have to connect (tether) your iOS device back to your computer so that the hardware can boot with the aid of the jailbreak application.

Using and Booting a Tethered Jailbreak
In the most recent example with redsn0w and iOS 4.2.1, you have to do the following if the jailbroken iOS device is rebooted:

    Connect the iOS hardware (iPod, iPad, iPhone) to your computer
    Relaunch the same redsn0w application you used to jailbreak the device
    Select the “Just boot tethered right now” option (shown in the screenshot above).
    The jailbroken hardware will now boot with the aid of redsn0w

After the device has been booted you can then disconnect it from your computer and use it as usual, just remember that if the battery dies or you reboot the iPhone/iPod you will need to connect it again. These tethered jailbreaks work with both Mac OS X and Windows.
Untethered Jailbreak

An untethered jailbreak is the preferred jailbreak because it requires no connection to your computer except for the initial jailbreaking process. You can reboot your iPhone or iPod touch as much as you want without having to tether it to your computer to boot. If the battery dies on a device that has an untethered jailbreak, it’s no big deal you just charge it again and it will boot as usual. This is how most of the modern jailbreaks work for iOS 4.1 and prior, like greenpois0n, PwnageTool, limera1n, and sn0wbreeze.

Using and Booting an Untethered Jailbreak
There is nothing to it. Boot your iOS hardware as usual, an untethered jailbroken device behaves like any other iPhone, iPod touch, or iPad, you can reboot at will trouble-free.

For iOS 4.2.1 the untethered jailbreak is currently only available for iPhone 3G and older iPhone 3GS models, but the iPhone Dev Team is actively working on untethered solutions for other iOS hardware.
Tethered vs Untethered Jailbreaks

Due to the hassle of tethering (connecting) your iOS hardware to a computer on each boot, an untethered jailbreak is obviously preferential.

If you are patient, I would always recommend waiting for an untethered jailbreak to become available for your hardware. If you are determined to proceed on the cutting edge of jailbreaking, learn how to jailbreak iOS 4.2.1 with redsn0w 0.9.6b4, but as I stated before, the untethered option is only available to older hardware: the iPhone 3G, old iPhone 3GS, and old iPod touch 2G. Most people are better served by waiting for an untethered jailbreak to be released.

In essence, jailbreaking your iPhone means freeing it from the limitations imposed on it by your carrier, whether that's AT&T or Verizon, and Apple. You install a software application on your computer, and then transfer it to your iPhone, where it "breaks open" the iPhone’s file system to allow you to modify it. Why Would I Want to Jailbreak My Phone? It lets you do everything from customizing the look of your iPhone to installing third-party applications (such as titles that are not authorized and available in the App Store) and customized ringtones on it. Depending on how far you're willing to go, you can do even more than that: Jailbreaking even lets you to unlock your phone so you can use it with a carrier other than the one from which you purchased it.

Why Wouldn't I Want to Jailbreak My iPhone? Once you do it, you're on your own. You may have voided your warranty, so you can't rely on AT&T, Verizon, or Apple to fix any problems you encounter. All of the applications that jailbreak your phone are unauthorized and could damage or completely disable your iPhone. Your slick smartphone could end up as nothing more than a very expensive paperweight.

Oh. Why Would I Want to Do That, Again? There's a ton of third-party apps available once you jailbreak your phone. Some of them are really fun, some of them are really useful, and plenty of them are really cool. Sure, many of them are available in the App Store, but there are many, many more unauthorized apps that are also available.

_When consumers purchase a calling plan and phone from a provider, the phones are always configured (or locked) to that provider's network. That's why the provider name appears when the phone is turned on. The phones also come with Subscriber Identity Module (SIM) cards that actually provide access to the network but, even without the SIM card, the phone will still flash the provider's logo. If the consumer tries to use a SIM card from a different provider, the phone will not access the other provider's network because it is locked out. An unlocked cell phone is a phone that is not configured or programmed to any specific provider network and can access multiple networks by changing the SIM card.

Read more: What Does an Unlocked Cell Phone Mean? | eHow.com http://www.ehow.com/about_5089019_unlocked-cell-phone-mean.html#ixzz1eHknmhks

Hackivist group Anonymous vows to “kill Facebook” on November 5, citing users’ lack of choice in privacy as its reason for attack.

Anonymous confirmed via a tweet that while some of its members are organizing the upcoming attack against Facebook, the hacker organization as a whole does not necessarily agree with the attack.

The group of hackers has claimed participation in just about every recent notable hacking attack of this year and successfully broke into 70 law enforcement websites and took down the Syrian Ministry of Defense website this week alone.

This recent interest in Facebook, despite a slew of privacy concerns raised against the social network since its founding, may be a result of Anonymous’s recent announcement that it plans to create its own social network, called AnonPlus. After the group’s Google+ account, called “Your Anon News,” was banned, it began fleshing out AnonPlus.com, “a new social network where there is no fear … of censorship … of blackout … nor of holding back.”

For more Info go to
http://www.metro.us/newyork/life/article/940070--anonymous-facebook-to-be-destroyed-nov-5

Anonymous (used as a mass noun) is a group initiating active civil disobedience and spread through the Internet while staying hidden, originating in 2003 on the imageboard 4chan, representing the concept of many online community users simultaneously existing as an anarchic, digitized global brain.[2] It is also generally considered to be a blanket term for members of certain Internet subcultures, a way to refer to the actions of people in an environment where their actual identities are not known.[3]

In its early form, the concept has been adopted by a decentralized online community acting anonymously in a coordinated manner, usually toward a loosely self-agreed goal, and primarily focused on entertainment. Beginning with 2008, the Anonymous collective has become increasingly associated with collaborative, international hacktivism, undertaking protests and other actions, often with the goal of promoting internet freedom and freedom of speech. Actions credited to "Anonymous" are undertaken by unidentified individuals who apply the Anonymous label to themselves as attribution.[4]

Although not necessarily tied to a single online entity, many websites are strongly associated with Anonymous. This includes notable imageboards such as 4chan, Futaba, their associated wikis, Encyclopædia Dramatica, and a number of forums.[5] After a series of controversial, widely-publicized protests and distributed denial of service (DDoS) attacks by Anonymous in 2008, incidents linked to its cadre members have increased.[6] In consideration of its capabilities, Anonymous has been posited by CNN to be one of the three major successors to WikiLeaks.[7]

For more go to
http://en.wikipedia.org/wiki/Anonymous_%28group%29,