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Do you know where your friends are? If not, Google wants to help you find them. Today, Google introduced Latitude, a new opt-in feature that lets smartphone and laptop users share their location with friends and allows those friends to share their locations in return. Although not pinpoint accurate, Latitude can display your general location based on information from GPS satellites and cell towers. Latitude works on both mobile devices and personal computers. What Latitude can do Once you and your friends have opted in to Latitude, you can see your friends' Google icon displayed on Google Maps. Clicking on their icon allows you to call, email or IM them, and you can even use the directions feature on Google Maps to help you get to their location. Google says Latitude works in 27 countries and with many mobile platforms including iGoogle with your computer. The list of compatible phones are: *Android-powered devices, such as the T-Mobile G1 *iPhone and iPod touch devices (coming soon) *most color BlackBerry devices *most Windows Mobile 5.0+ devices *most Symbian S60 devices (Nokia smartphones) *many Java-enabled (J2ME) mobile phones, such as Sony Ericsson devices (coming soon)

There is no denying that Google is a giant success. But its size has made the "do no evil" mantra all the more difficult for it to follow - and for some of us to believe. Lately, it seems every new release and every new decision draws the ire of someone, be it politicians, privacy campaigners, or even villagers. While the Google brand is certainly in better shape than many tech firms, its constant moves to control more and more of our data and information has some up in arms. Privacy Three recent announcements have drawn the attention of privacy campaigners in the UK - Latitude, Street View, and behavioural advertising. Latitude is Google's mobile tracking system. Sign up for it, add your friends, and you can all see exactly where each other is via your mobile phone signal pinpointed on a Google map. Handy if you're bored and want to know who's out and about, but the location tracking system could be frightening for a host of other reasons, some say. Last month, Liberal Democrats Home Affairs spokesman Tom Brake filed an early day motion (EDM) asking the government to look into Latitude. Brake said: "This system poses an insidious threat to our hard-won liberties. 24-hour surveillance and a Big Brother society are new realities." But the heat was off Latitude after Street View was unveiled in the UK. The photo mapping system features street-level photos of 25 cities, offering a virtual tour of places such as London, Manchester and more. But some people aren't so happy having their homes, cars and selves photographed and mapped - even with face and number plates blurred. The backlash didn't take long to start. Within a day, Privacy International was on the case, asking the Information Commissioner to shut the site down.

Richard Acton-Maher of San Francisco was in nearby Berkeley last month and wanted to meet friends for lunch. Instead of making calls to see who was around, he looked at a digital map on his iPhone that plotted their locations. "One of my friends was also there," said Acton-Maher, 24, who used a service from a startup company called Loopt Inc. "I gave him a call and met him for lunch. It just enhances the communications tools that I already have." Google Inc., encouraged by people's willingness to share their personal lives on sites like Facebook, is betting more people like Acton-Maher will post their whereabouts online. The owner of the most popular search engine started a program this month called Latitude, seeking to compete with mobile networking services such as Loopt, Match2Blue, Whrrl and Limbo. Besides competition, Google's effort to turn mobile phones into tracking devices faces criticism from privacy advocates. Useful for friends and family, location data would also be valuable to the government, said Kevin Bankston, an attorney with the San Francisco-based Electronic Frontier Foundation, a not-for-profit organization focused on civil-liberties. "This is certainly valuable information to investigators and potentially to civil litigants," Bankston said. "This type of location information presents a very new sensitive data flow." Google says its privacy settings address such concerns. People using Google's mobile maps can opt not to use Latitude and choose whom they share their information with. The program also only stores the user's last known location, not a full history of their travels, said Steve Lee, a Google product manager. 'Ephemeral Data' While Google doesn't plan to store the data, the government could still go to court to ask for the company's help in tracking someone during an investigation, Bankston said.

Concerned that Google knows too much about you? The company provides many ways to protect your privacy online -- you just need to find them. Here are six good ones. 1. Know your privacy rights: Use the Google Privacy Center. This site includes all of Google's privacy policies, as well as privacy best practices for each of its products and services. Although the "legalese" of privacy policies can be difficult to understand, Google's Privacy Channel offers a library of short YouTube videos with practical tips on protecting your data when using Google products and services. Try the "Google Search Privacy" and "Google Privacy Tips" series. 2. Protect your content on the services you use. Some content that Google stores for you, such as photos uploaded in Picasa Web Albums, are public by default. You can protect your privacy when you upload photos by choosing the appropriate checkbox. Choices include "unlisted" (accessible only if you have the Web link, and not indexed by Web search engines) or private (viewable only by named users who must sign in). Another example: You can take a Google Chat "off the record" if you don't want the instant messaging transcript stored. In contrast, Google Latitude, which tracks your whereabouts by way of GPS-enabled cell phones, does not share your location data by default. You must authorize others to see it. Latitude stores your last known location, but not your history. 3. Turn off the suggestion feature in the Chrome browser. By default, Chrome retains a history of Web sites you've visited -- and the full text of those pages -- so it can try to guess which Web address you want as you type in the "Omnibox." You can turn the feature off by going to "Under the Hood" under Options and unchecking the "Use a suggestion service" box. You can also select other privacy options, including surfing in Chrome's "incognito" mode. 4. Turn off Web History. You may have turned on the Web History option, also called Personalized Search, when yo

"Every day thousands of people download new applications onto their smart phones without much care for the terms of service they so easily agree to. What most of these people don't know is they may be volunteering information and allowing for companies to gather data without their consent. Recently a company called Pinch Media was charged with being a little too invasive when it comes to gathering information through their iPhone apps. According to one iPhone developer, applications using Pinch Media can retrieve information like your phone's personal ID number and can work in conjunction with other applications like Facebook to determine your gender, birth year and even your exact longitude and latitude. Pinch Media has been accused of gathering information that has nothing to do with its applications. Instead, they have been using this data collection for advertisements and other marketing purposes. Worse, is that this information is often taken without the consent of the user and more often than not does not allow the user the option to stop the information gathering. Pinch Media has fought back by arguing that they are completely within their rights to retrieve the information as long as the user gives consent when they agree to the terms of the application. Regardless of whether or not the information they gathered is being used for good or ill mannered purposes one thing is certain. Smart phone users should pay more attention to the terms of service they agree to. A simple visit to a software developer's web site can be the difference between you using your applications and your applications using you. Take the time out to read the fine print, and if you aren't sure about something - email the company directly with your questions or concerns."