Hewlett-Packard plans to use Yahoo's advertising network in a pilot program that will deliver targeted advertisements for content printed with its latest line of Web-connected printers.

Google today attacked Apple's apparent decision to ban some third-party ad networks from collecting ad performance data on the iPhone and iPad.

A mobile advertising company has written a JavaScript library that makes Flash advertisements viewable on devices such as the iPad, working around Apple's opposition to Adobe Systems' multimedia platform.

Google's search service and search advertising products generated an estimated US$54 billion for U.S. businesses, Web site publishers and nonprofit groups in 2009, according to a study the company has released.

Marketers in the U.S. significantly increased their spending on online display ads in the first quarter, as social networking leader Facebook served up the most impressions of this type of ad, according to comScore.

Online advertising spending grew 7.5 percent in the U.S. in the first quarter, a clear sign that the digital media industry is recovering from a rough 2009, according to the Interactive Advertising Bureau (IAB) and PricewaterhouseCoopers (PwC).

Two U.S. lawmakers have released a draft bill that would require companies that collect personal information from customers to disclose how they collect and share that information, but several privacy and consumer groups said the proposal would legalize current privacy violations online.

Twitter on Tuesday introduced a new service called Promoted Tweets, which will let companies send ads in the form of ordinary messages, according to a blog posted by co-founder Biz Stone.

Now that Twitter has begun to display ads--pardon me, Promoted Tweets--in users' search results, the big question is how millions of loyal Twitter fans will respond. Reaction on the micro-blogging site has been muted thus far--more questions than commentary, actually--and it's apparent that most users haven't seen the new ads yet.

Companies such as Continental Airlines rely on Internet advertising from Google to deliver customers to their Web site. It constitutes essential marketing in the digital age.

The U.K.'s competition authority launched two studies on Thursday that will probe behavioral-advertising pricing strategies and if some pricing practices could potentially mislead consumers.