Will Google’s AdSense be in Trouble Because of Facebook?

Facebook is infiltrating sites all over the web. These sites are happy to add Facebook’s social plug-ins. What if Facebook launched an AdSense-like product – a product that lets publishers stick relevant ads from Facebook on their sites for a cut of the money?

Google Improves Matching for AdSense Link Units

Google has rewritten its link unit matching system for AdSense. Link units in AdSense ads display a list of topics that are relevant to the content of the publisher’s page. When a user clicks a topic, Google shows a page of related ads. AdSense publishers can earn from valid user clicks on the ads on this resulting page.

Google Takes Limit Off AdSense Category Filtering

Google has eliminated the limit to how many categories AdSense publishers can filter from their sites. There are 11 categories, and users can filter as many of them as they want.

Google Uses Hours of Search History to Serve Ads

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 first one.

Google Lets AdSense Publishers Donate Earnings to Haiti Relief

Google has launched an AdSense feature that lets AdSense publishers donate their earnings to Haiti earthquake relief efforts.

Keyword Hints Used Now More for AdSense For Domains

Google announced today that AdSense for Domains is now using optional keyword hints more often. Keyword hints are provided by the user, who enters keywords into a field to assist Google in the targeting of ads for potentially ambiguous domains. Google’s Randy Heath explains: