Abstract: An indication is received. The indication is associated with a selection of an identifier on a webpage that at least in part specifies an enhanced content configuration. An enhanced content configuration is set at least in part by using the received indication. The enhanced content configuration can be used to enhance content included on a webpage.

Abstract: Determining performance of an electronic advertisement is disclosed. Data associated with a measured time of the electronic advertisement is received. The received data is analyzed to determine a performance value of the advertisement. In some cases, the performance value is associated with a time based electronic advertisement cost model.

Abstract: Delivering enhanced content is disclosed. An indication of content included on a webpage that is to be enhanced is received. Enhanced content is selected from a specified enhanced content provider previously specified from among a plurality of enhanced content providers. The selected enhanced content is associated with the content to be enhanced. The enhanced content is associated with a display of the webpage.

Abstract: A chimeric protein sensor including an optically active polypeptide linked to a responsive polypeptide, or responsive fragment thereof, which undergoes a change in response to a cell signaling event, wherein an optical property of the sensor is altered in response to the change in the responsive polypeptide, or responsive fragment thereof is provided, as well as nucleic acid sequences encoding the chimeric protein sensor. The chimeric protein sensor includes an optically active polypeptide or fragment thereof, such as green fluorescent protein (GFP), for measuring cellular events in vivo.