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The celebrity gossip machine had burbled for a day or two about Ozzy Osbourne's marriage, and for weeks about Jada Pinkett Smith's. Yet both stars hit a breaking point at about the same time — and took to Facebook.

As if Facebook weren't annoying enough. The Wall Street Journal reports that the social network may adopt Twitter's arguably most tiresome -- and arguably most Corporate -- feature: the hashtag. Facebook is testing the effectiveness of hashtags and is considering adding the categorizing feature to its site, reports the WSJ citing sources familiar with the matter.

...Two different firms that study social media sentiment, Taykey and General Sentiment, have issued Oscar predictions based on what people are saying on Twitter, Facebook and other social platforms. They arrived at totally different conclusions.

It seems Facebook's planetary ubiquity is inevitable ... until you take a look at the sheer size ofthose competitors: Total membership of the four major non-U.S. networks total 778 million. Combine that with Twitter's 500 million active users around the globe, and you've got a social horde that eclipses Facebook's.

The battle lines are sharpening between Facebook and Twitter, as they fight to become the prime hub for photo sharing on the Internet.

A judge ruled Friday that
Trayvon Martin's school and social media
records should be provided to attorneys
defending the man accused of killing the teen,
who they argue was the aggressor in the
conflict and has a history of violence.

On the Internet, the real winner of Tuesday night’s presidential debate may just be the phrase “binders full of women.” Mitt Romney’s sound bite quickly spawned its own Twitter account, Facebook page with more than 161,000 likes and countless online memes.

Who knew Sesame Street's Big Bird would play a role in tonight's presidential debate in Denver? About 30 minutes into the verbal contest between President Obama and Republican challenger Mitt Romney, the former governor explained that he would cut what he considers non-essential items in the budget, including cuts to PBS, which employs debate moderator Jim Lehrer.

Some companies are leaning on social media like Facebook, Twitter and Foursquare for advice on what products to bring to market.

On most days, Twitter is now generating the majority of its revenue from ads shown to its users on mobile gadgets, rather than from ads on Twitter.com, company executives said. One key reason: People who see a Twitter ad on their phones are more likely to click or interact with it in some way, which is how Twitter gets paid for advertisements.