We go round and round - Inside AdSense

This week, we’ve added a new dimension for publishers in customizing these ad formats. You’ve long been able to customize the size and colors of your ad units; now, you can also customize the shape by selecting between square, slightly rounded, or very rounded corners.

Why we’re buying DoubleClick - Official Google Blog

Since Google has never played in [display advertising], acquiring DoubleClick will enable us to complement our search and content-based advertising capabilities. Its products and technologies will help to improve online advertising for consumers, advertisers and publishers.

Custom Search Engine APIs - Custom Search Blog

With Linked CSEs, you designate a CSE specification URL with each search request (as a hidden form field in your search box HTML code). Google retrieves the CSE specification from the URL when your user searches in the CSE. We cache and refresh the results so that only the first search to your CSE incurs any delay.