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The founders of Digg.com – which has been rocked by an unprecedented user revolt over the release of an HD-DVD decryption code – accepted sponsorship from the organization behind HD-DVD last year. (See also our exclusive new report for the latest news on this issue, and our latest story, which describes how Digg has seen a huge rise in readership during the HD DVD furore ).

Episodes of the DiggNation video show were sponsored by the HD DVD Promotion Group. DiggNation is produced by Revision3, a company run by Digg founders, Jay Adelson and Kevin Rose. Rose is also a co-host of the DiggNation show. The image below shows the HD DVD logo displayed at the beginning of one such episode.

China has closed more than 4,800 pornographic websites in little over a month, the government has claimed.

More than 270 website operators have already been arrested, and police had been called in to investigate possible illegality in 1,170 cases, according to the public security ministry. The ministry began a new campaign against online porn on April 15.

Ebay has lost half its market share in China in only three months as the online auction giant struggles to get to grips with local competition in the world's largest market. News of the shocking reversal comes less than a month after eBay CEO, Meg Whitman, claimed Chinese operations were 'going well'.

Successful trials of a Viagra substitute have lifted the share price of its developer, Dong-a PharmTech of Korea. The drug, Zydena, or Udenafil, is already one of Korea's best selling pills, despite facing a stiff challenge from Viagra.

What the company describes as 'intercourse completion rates', were doubled to almost 70 percent for couples using the highest doses of the drug in the trial. The rate for those using a placebo was 38 per cent.

Could Silverbrook's stunning Memjet inkjet be a hoax? This article looks at a few of the arguments from people who say that Silverbrook Research's impressive demonstration videos* of the one page per second inkjet cannot possibly be real.

Since this is an opinion piece, let's just put our cards on the table right away. Could Memjet be a hoax? No, we really don't think so. A great demonstration isn't the same as a finished product, we admit, but we believe the videos show fully working prototypes, just as Silverbrook Research has claimed.

An internet connection owned by SCO, the firm at the center of a legal battle over the open source operating system Linux, was used to delete information from SCO's Wikipedia entry last month.

Contributors to online discussion groups have now suggested that the same individual later went on to remove substantial amounts of unfavorable information from the Wikipedia entry, but the evidence they have so far offered to support this view is not strong, and appears to be circumstantial, at best.

Updated March 26: MySpace has failed to register its Chinese language domain name, despite being just days away from launching its service in the world's most populous market.

Wireless network manufacturers are promising that a new standard will end Wi-Fi compatibility problems and other headaches. With the announcement of the 802.11n draft 2.0 standard today, the industry appears to be reaching out to disillusioned consumers.

Lazy shoppers who see an ad for a music CD that they like can buy it instantly by snapping a photo with a camera phone, thanks to a new service now available in Japan.

The 'ER Search' service links a mobile phone with image recognition software via a 3G network to a server which hosts a database of CD covers.

Microsoft is now accepting Bitcoin. According to Microsoft's payments site, the digital currency can be used to purchase software, apps, games, movies, TV shows, music and other digital content from the Windows, Windows Phone, Xbox Games, Xbox Music, or Xbox Video stores. Microsoft is the world's largest software company.