Society's Child
Google+ allows individuals to share photos, messages and comments but also integrates the company's maps and images into the service.
It also aims to help users easily organise contacts within groups.
But some analysts say Google has simply reproduced features of Facebook while adding a video chat function.
Google, which handles roughly two out of every three internet searches in the US, has taken several stabs at Facebook in recent years.
But its previous efforts ended in failure, with both Google Wave and Google Buzz proving unpopular with users.

Pepper, an 8-year-old miniature schnauzer owned by Gina and John Rarick of Dillsboro, is still recovering from injuries she sustained after being hit by Frontier Communications employee Joshua Gray, according to Gina Rarick. Gray has been charged with misdemeanor cruelty to animals, and his court date is July 12. Rarick said earlier this week that Pepper had improved slightly, but the dog can’t hold her head up and is unable to walk straight.
Pepper, an 8-year-old miniature schnauzer owned by Gina and John Rarick of Dillsboro, sustained severe brain injuries after Gray hit her with a large test phone, according to Gina Rarick.
Pepper is currently in the care of Sylva Animal Hospital during the day, but Gina Rarick takes her home at night. Pepper's condition is unstable, but she can walk, and by early this week, Pepper was doing better, Gina Rarick said.
"She can walk but she walks in circles. That's the brain damage," she said. "She'll probably always walk in circles."

This booking photo provided by the Saginaw Police Department shows 22-year-old Carlos Rico. Police say Rico abandoned his 4-year-old son along a West Texas highway, and the injured boy spent several hours alone in the dark before a passing motorist picked him up.
Sweetwater - A father abandoned his 4-year-old son along a West Texas highway, and the injured boy spent several hours alone in the dark before a passing motorist picked him up, police said.
Carlos Rico, 22, stopped his car along a cactus-lined stretch of Interstate 20 near Sweetwater at about 3 a.m. Tuesday and "threw the boy out of the car like a bag of garbage," Sweetwater police Chief Jim Kelley told the Abilene Reporter-News on Tuesday.
The boy was picked up about three hours later by the local high school basketball coach and taken to a hospital, where doctors removed at least 500 cactus spines from the child's body, Kelley said. The boy was in the state's custody on Wednesday.
Back then, her dream was to become a successful surgeon and to marry a good man.
"I started to dream of the [wedding] gown when I was 10 or 11 years old. I dreamed of forming a small family - having a kid like my mum and to be a surgeon at the same time".
More than 30 years on, Samia is a fully-qualified doctor.
But in a country where the guardianship system means a woman's life is not her own, her dreams of a happy marriage - with a man of her own choosing - have been taken away from her.
Many a visitor to Burma (Myanmar) who sees the headquarters of Aung San Suu Kyi's political party calls it a "cowshed." The ramshackle structure is hardly a symbol of her great ability to keep alive the people's hopes for democracy in a country run by despots.
So where does Ms. Suu Kyi's strength lie in leading a dissident movement despite being isolated for 15 years, either in prison or under house arrest?
The answer can be found in a talk recorded in secret for the BBC's Reith Lectures, just months after her release. The tapes were smuggled out of Burma for broadcast this week and next (click here).
Suu Kyi's insights about her inner strength build on the works and writings of previous freedom fighters, such as Vaclav Havel. But they are unique to her experience as the daughter of modern Burma's founder, someone raised in a Christian school but who lives in a Buddhist country that has been in simmering revolution since 1988.
These lectures could not be better timed to inspire the faltering Arab Spring - as well as the Burmese.
She says a basic human right is freedom from fear, something that Arabs learned quickly after Tunisia's revolution in January. For her, living under a repressive regime, "fear is the first adversary we have to get past when we set out to battle for freedom, and often it is the one that remains until the very end."

The wreckage of Tu-134 plane, belonging to the RusAir airline, is seen on a highway near the city of Petrozavodsk Tuesday, June 21, 2011.
The five nuclear experts killed in a plane crash in northern Russia earlier this week had assisted in the design of an Iranian atomic facility, security sources in Russia said on Thursday.
The five Russian experts were among the 44 passengers killed when the Tupolev-134 plane broke up and caught fire on landing outside the northern city of Petrozavodsk on Monday.

Lawmakers surround President Barack Obama as he signs the health care legislation in March 2010 at the White House.
The "individual mandate" requiring nearly all Americans to purchase health insurance by 2014 or face financial penalties -- was challenged in federal courts by a large number of individuals and groups, who said people should not be forced to purchase a product like medical coverage. A partially divided U.S. Court of Appeals for the 6th Circuit disagreed.
"We find that the minimum coverage provision is a valid exercise of legislative power by Congress under the Commerce Clause," said the three-judge panel on Wednesday, in a 64-page opinion.

Sailors assigned to the guided-missile destroyer USS James E. Williams (DDG 95) catch lines from the Russian navy destroyer Admiral Chabanenko (DDGHM 650) as it prepares to dock at Naval Station Norfolk.
FRUKUS stands for the participating countries - France, Russia, the United Kingdom and the United States - and is a two-week interoperability exercise aimed to improve maritime security through open dialogue and increased training between the participating navies.
"FRUKUS 2011 provides the opportunity for personnel of all participating nations to engage in realistic and challenging maritime training to build experience, cooperation and teamwork," said U.S. Navy Capt. Peter Demane, commander, Destroyer Squadron (DESRON) 26.
FRUKUS consists of two phases: ashore and at-sea. While ashore, Sailors from each ship will participate in training areas including damage control, fire fighting and ship handling. The at-sea portion, which begins next week, will provide critical training in maritime domain awareness, anti-piracy and maritime interdiction operations. A shore-based multinational combined task group staff will provide command and control for the ships during the at-sea phase.

Beachgoers on the U.S. East Coast may see U.S. Marine Corps MV-22 Ospreys like these overhead next week.
But don't worry -- the United States hasn't declared war on your family's beach house. It's just part of a major Marine Corps exercise called Exercise Mailed Fist (translation: armored fist).
The exercise is designed to test the capability of every type of Marine Corps aircraft, including MV-22 Ospreys and F/A 18 Hornets, as well as some Navy ships and Air Force planes.
The drill will stretch from Quantico Marine Base in northern Virginia to the Navy's Pinecastle Bombing Range in Florida.
With thousands of Marines and other service members involved, it's the biggest such drill ever on the U.S. East Coast.