Abstract: A variation testing system environment for performing variation testing of web pages and applications is disclosed. Users requesting a view from a content provider are not randomly assigned to one of a plurality of variations of the view. Rather, a function is applied to each user's identifier in order to determine which variation of the view is provided to a client device of the user.

Abstract: A mobile device, including an accelerometer and a processing unit receiving signals from the accelerometer and determining motion information of the mobile device based on the received signals is disclosed. A content selector selects a media format for content based on the physical state of the mobile device as indicated by the signals from the accelerometer. A display device displays the content in the selected media format. When the motion is a predetermined type of motion, the received content is withheld from being displayed by the display device. A machine learning apparatus is provided as the content selector.

Abstract: An advertisement distribution system can generate advertisement creatives having annotations and advertisement microsites using content extracted from landing web page documents. An advertisement module of the advertisement distribution system can analyze landing pages and other documents to identify relevant information, such as a phone number for a click-to-call annotation, an address for a merchant, and additional product information. The advertisement module can automatically generate the advertisement creatives and/or microsites using the extracted content. The microsite can include less data intensive content than the landing page and be linked to the advertisement creative. In this way, the less data intensive microsite can be downloaded and displayed in response to a user selecting the advertisement creative rather than downloading the landing page. This supports quicker advertisement browsing and is especially useful for serving advertisements on wireless devices having slower download speeds.