With the help of Dann Sheridan, Robb designed and built the Gomez performance measurement system. This system was briefly featured as the "online broker weather report" on CNBC. The Gomez network checked on the availability of transactions systems that operated at big banks and brokerage firms like Fidelity Investments and JP Morgan. The Gomez network consisted of monitoring servers in 54 cities around the world, on six continents and across 23 different Internet backbones. Measurements were taken every five minutes and reported back in real time.