LEADING THE DAY: WikiLeaks released several thousand cables it claims have come from U.S. embassies in China and Libya, after a promise to release 35,000 cables late Tuesday. The group is encouraging everyone to go through the documents and share what they’ve found in them using the hashtag #wlfind.

The group said after releasing the documents that it was suffering a sustained denial-of-service attack and was relying on backup servers.

Earthquake jams cell networks : Major cellular networks were slammed with calls following the earthquake that hit the East Coast Tuesday, leaving many people without telephone service, The Washington Post reported. The Federal Communications Commission called the outages “significant” and said it is looking into how best to improve communications during emergencies. With calls out of the questions, many turned to Twitter or Facebook to communicate during the 5.8 quake.

Miguel Rios, an engineer at Twitter created an animation of how tweets about the earthquake spread.

Sprint soars on iPhone report: After a Wall Street Journal report that said Sprint Nextel is poised to get the iPhone this fall, shares jumped sharply, up 10 percent, and closed at $3.59. The company saw a decline in subscribers in its last quarter, citing in particular that it faced a market where both of its two major competitors offered the iPhone.

The report said that the number-three carrier will begin carrying the iPhone 5 and the iPhone 4 in October. Sprint Nextel is the only major carrier that currently offers unlimited data plans.

Facebook makes tweaks to privacy features: Facebook has made some long-awaited tweaks to its privacy features, giving users more control over what pictures are tagged with their names and posted to their profiles. Several new Facebook features seem to echo what Google has done with its Google+ network, including allowing users to have more control over sharing on a per-post basis and making it easier to see how one’s profile looks to others.

Twitter co-founders back Lift: Obvious Corp., the company restarted by top Twitter alums Biz Stone, Ev Williams and Jason Goldman in late June, has backed its first start-up, Lift. There are few details about Lift, which is described on the company’s site as a “new application for unlocking human potential through positive reinforcement.”