To date, the company–which makes the leading open-source ad serving software, catering to about 30,000 Web publishers on 100,000 Web sites–has raised $30.8 million. “We raised $15.5 million at the end of 2007 and still had a chunk of that left, so we didn’t have to raise money,” OpenX CEO (and former Yahoo Senior VP) Tim Cadogan told The Deal. “But if it’s generally true that it makes sense to raise money when you don’t need it, in this environment, it is triply true.”

Quadruply true when you’re competing with the likes of Google’s (GOOG) Double Click and Yahoo’s (YHOO) Right Media, which dominate the Internet advertising market in which OpenX plays.

YouTube’s latest API offerings allow anyone building a Web site or software application that is connected to the Internet to upload videos straight to YouTube; let users comment, rate and favorite the videos; and customize and control the Flash player in which the videos are played. This can be used in conjunction with the existing APIs, which launched last year and which provide the ability to view videos on other sites and to search for videos on YouTube.

“The enhancements to the YouTube APIs and Tools offering are free and easy to use, giving YouTube users yet another way to engage the world of video and actively participate in the YouTube community wherever they are, whenever they want.”

Of course, these enhancements also give YouTube and, by extension, Google (GOOG), another way to engage the world of advertising. In the API’s terms of service, YouTube reserves the right to serve ads through a publisher’s API Client, but prohibits publishers from selling their own. Two relevant excerpts from the TOS:

I. Definitions
“API Data” means any data or content, including but not limited to YouTube video content, obtained from YouTube using any YouTube API, including advertising content that YouTube may, in its sole discretion, provide along with or insert in data or content obtained from YouTube using the YouTube API.”

4. Commercial Use. You agree not to use the YouTube API for any prohibited commercial uses, which include the following actions taken without YouTube’s express approval:

• the sale of the YouTube API, API Data, YouTube video content or related services, or access to any of the foregoing;
• use of the YouTube API for the primary purpose of deriving revenues from your API Client, such as advertising or subscription revenue or the sale of copies of the API Client;
• the sale of advertising, sponsorships or promotions targeted to, within or on the API Client or YouTube video content.

Ah. So that’s how it is: YouTube doesn’t just broadcast you, it broadcasts advertisements as well.

UPDATE: YouTube product manager Jim Patterson tells TechCrunch that the API is open to YouTube Partners, who will share in the advertising generated by their players.

We are not introducing any fundamentally new way to monetize. Any video that is uploaded through our API is treated exactly as on YouTube.com. In general if a video is uploaded to YouTube, in some cases we serve ads into that on YouTube.com. When people embed those we reserve rights to serve ads in the future.”

We would be disappointed in 2008-2009 if we don’t have a very significant position in the display-ad marketplace.

- Tim Armstrong, Google’s North American president for advertising and commerce

Looks like Google’s informal corporate motto, “Don’t Be Evil,” was assurance enough for the European regulators reviewing the company’s proposed merger with online ad-serving vendor DoubleClick.

The European Commission this morning approved Google’s (GOOG) $3.1 billion acquisition of DoubleClick, clearing the way for the unprecedented combination of their advertising services, as well as their vast troves of data about consumer behavior on the Internet.

In a statement, the EC said the deal would be unlikely to have harmful effects on consumers and can proceed without conditions. “The Commission found that the merged entity would not have the ability to engage in strategies aimed at marginalizing Google’s competitors, mainly because of the presence of credible ad-serving alternatives to which customers (publishers/advertisers/ad networks) can switch, in particular vertically integrated companies such as Microsoft, Yahoo and AOL,” the EC explained. “The market investigation also found that the merged entity would not have the incentive to close off access for competitors in the ad-serving market, mainly because such strategies would be unlikely to be profitable.”

Less than two hours after the EU granted its approval, Google announced that the deal had closed. Google CEO Eric Schmidt declared himself “thrilled.” As well he should be: Shares of Google, which have lately been trading down, were up by as much as $18 this morning, or more than 4%, at about $431.