Patent ID: 8429544

Claim:
A computer-implemented method comprising: receiving requests for advertisements from a client for a plurality of respective advertisement slots of a first web page; obtaining respective instructions for each of a plurality of advertisements identified as being responsive to the requests, wherein the obtained respective instructions, when executed by the client, cause the client to present one of the advertisements; generating first instructions that, when executed by the client, cause the client to present the obtained respective instructions in the first web page without executing the obtained respective instructions; generating second instructions that, when executed by the client, cause the client to execute the obtained respective instructions to present each of the advertisements in a second web page along with a respective load time, wherein the respective load time is a latency attributable to a content server from which the advertisement was requested; and sending the first and second instructions to the client in response to receiving the requests, wherein when executed by the client, the first instructions cause the client to present the obtained respective instructions in the first web page such that a user of the client can electronically provide a copy of at least a part of the obtained respective instructions to a third party for review of the respective load time.