6. A method for providing content to a network browser based on a reported latency comprising: storing, in a memory, a first item of content for a web page and a second item of content for the web page; receiving, with a processor, a request for the web page from a network browser; transmitting the web page, the first item of content, and the second item of content to the network browser; receiving a latency measurement for the previously transmitted web page and the second item of content, the latency measurement representing a difference between a first time when the first item of content began executing and a second time when a predefined event occurred associated with the second item of content; and modifying data associated with the second item of content for the web page with a different form of the data to account for the received latency measurement.
6. A method for providing content to a network browser based on a reported latency comprising: storing, in a memory, a first item of content for a web page and a second item of content for the web page; receiving, with a processor, a request for the web page from a network browser; transmitting the web page, the first item of content, and the second item of content to the network browser; receiving a latency measurement for the previously transmitted web page and the second item of content, the latency measurement representing a difference between a first time when the first item of content began executing and a second time when a predefined event occurred associated with the second item of content; and modifying data associated with the second item of content for the web page with a different form of the data to account for the received latency measurement. 7. The method of claim 6 , wherein the second item of content is a of a first content type, and the method further comprises: storing a third item of content of a second content type; and modifying the second item of content by replacing the second item of content with the third item of content.