Alex Lifschitz, of Los Angeles tweets from his on-campus apartment at the Rochester Institute of Technology in Henrietta, N.Y. on Wednesday, Oct. 21, 2009. Lifschitz, in his third year at the Rochester Institute of Technology uses Twitter as a tight-knit circle, keeping his contacts more limited than on Facebook. Using his cell phone or laptop, he tweets to let professors know he can't make it to class or to ask questions about assignments. He also uses it for something as basic as organizing a food run with friends on campus. "I can simply tweet and ask who wants to go somewhere with me, and I'll have a few takers at any given time," he says. (AP Photo/Don Heupel)
AP
Alex Lifschitz, of Los Angeles tweets from his on-campus apartment at the Rochester Institute of Technology in Henrietta, N.Y. on Wednesday, Oct. 21, 2009. Lifschitz, in his third year at the Rochester Institute of Technology uses Twitter as a tight-knit circle, keeping his contacts more limited than on Facebook. Using his cell phone or laptop, he tweets to let professors know he can't make it to class or to ask questions about assignments. He also uses it for something as basic as organizing a food run with friends on campus. "I can simply tweet and ask who wants to go somewhere with me, and I'll have a few takers at any given time," he says. (AP Photo/Don Heupel)
AP
Alex Lifschitz, of Los Angeles tweets from his on-campus apartment at the Rochester Institute of Technology in Henrietta, N.Y. on Wednesday, Oct. 21, 2009. Lifschitz, in his third year at the Rochester Institute of Technology uses Twitter as a tight-knit circle, keeping his contacts more limited than on Facebook. Using his cell phone or laptop, he tweets to let professors know he can't make it to class or to ask questions about assignments. He also uses it for something as basic as organizing a food run with friends on campus. "I can simply tweet and ask who wants to go somewhere with me, and I'll have a few takers at any given time," he says. (AP Photo/Don Heupel)
AP
Alex Lifschitz, of Los Angeles tweets from his on-campus apartment at the Rochester Institute of Technology in Henrietta, N.Y. on Wednesday, Oct. 21, 2009. Lifschitz, in his third year at the Rochester Institute of Technology uses Twitter as a tight-knit circle, keeping his contacts more limited than on Facebook. Using his cell phone or laptop, he tweets to let professors know he can't make it to class or to ask questions about assignments. He also uses it for something as basic as organizing a food run with friends on campus. "I can simply tweet and ask who wants to go somewhere with me, and I'll have a few takers at any given time," he says. (AP Photo/Don Heupel)
AP
This image provided by MySpace shows a Facebook page featuring a video by singer Ashley Tisdale. Social-networking site MySpace is using its joint venture with recording companies to launch a music video service that will pop into millions of profiles at rival Facebook as well. Starting Wednesday Oct. 21, 2009, music videos that MySpace has licensed for its site will run as well on the iLike music recommendation application, which the News Corp. unit acquired for $20 million. (AP Photo/MySpace) ** NO SALES **
AP
This image provided by MySpace shows a Facebook page featuring a video by singer Ashley Tisdale. Social-networking site MySpace is using its joint venture with recording companies to launch a music video service that will pop into millions of profiles at rival Facebook as well. Starting Wednesday Oct. 21, 2009, music videos that MySpace has licensed for its site will run as well on the iLike music recommendation application, which the News Corp. unit acquired for $20 million. (AP Photo/MySpace) ** NO SALES **
AP
Biz Stone, right, a co-founder and creative director of Twitter, Inc., speaks to reporters during a special event to launch a Japan-based mobile version of the popular microblogging service in Tokyo, Japan, Thursday, Oct. 15, 2009. Twitter launched its Japanese mobile site, hoping to penetrate a country where other U.S. social networking sites, including Facebook and MySpace, have failed to capture much ground. (AP Photo/Koji Sasahara)
AP
One of Japanese participants to Twitter, Inc.'s special event to launch a Japan-based mobile version of the popular microblogging service shows the Twitter page asking "what are you doing?" in Japanese on the mobile phone in Tokyo, Japan, Thursday, Oct. 15, 2009. Twitter launched its Japanese mobile site, hoping to penetrate a country where other U.S. social networking sites, including Facebook and MySpace, have failed to capture much ground. (AP Photo/Koji Sasahara)
ASSOCIATED PRESS
Biz Stone, a co-founder and creative director of Twitter, Inc., smiles with a Star Wars Stormtrooper during a special event to launch a Japan-based mobile version of the popular microblogging service in Tokyo, Japan, Thursday, Oct. 15, 2009. Twitter launched its Japanese mobile site, hoping to penetrate a country where other U.S. social networking sites, including Facebook and MySpace, have failed to capture much ground. (AP Photo/Koji Sasahara)
ASSOCIATED PRESS
Biz Stone, a co-founder and creative director of Twitter, Inc., speaks at a special event to launch a Japan-based mobile version of the popular microblogging service in Tokyo, Japan, Thursday, Oct. 15, 2009. Twitter launched its Japanese mobile site, hoping to penetrate a country where other U.S. social networking sites, including Facebook and MySpace, have failed to capture much ground. (AP Photo/Koji Sasahara)
ASSOCIATED PRESS
La red social Facebook anunció que dará a familiares y amigos la opción de homenajear la memoria de los usuarios fallecidos por medio de perfiles conmemorativos. Si un miembro de la red es reportado como muerto, Facebook eliminará de su perfil información como su estatus, actualizaciones y contactos.
