Now that Yahoo and Microsoft have received DoJ and EU approval on their search and advertising deal, Yahoo is doing plenty of talking about what the deal will mean for its search engine and its advertisers.

The two companies have a Search Alliance page set up that gives some insight about what to expect, such as:

When the Yahoo! and Microsoft Search Alliance is implemented, both companies will continue to have differentiated consumer search experiences. However, Microsoft will manage the...

Google has made some adjustments to how it uses referral URLs for contextual matching of AdSense ads. Google has started expanding the use of query words in referral URLs to a few hours.

Basically what this means is that Google is using user's search history to determine what ads to show on sites using AdSense. If a user arrives at one AdSense site via a search results page, and then goes to another AdSense site within a few hours, they might see ads based on the referral data from the...

For most people, listening to music online is terribly convenient, and the occasional audio ad shouldn't represent a deal breaker.  MySpace may be making a smart move, then, as it's begun testing 30-second ads with help from an Internet radio advertising company called TargetSpot.

The end result isn't too different from what fans of Yahoo Music or Pandora - or even regular radio listeners - are already used to.  MySpace members just have to tolerate a short ad, and then they're free to...

Google users in the UK may be unusually well-informed with regards to their government's healthcare policies.  The Department of Health revealed this week that it spent about 2.72 million (or $4.25 million at the current exchange rate) on AdWords over the past year.

To be exact: the department spent 2,720,457.11 between February 1 of last year and January 31 of this one, according to official records.  And a whopping 21,939 keywords (including ones like "health information" and "stop...