looking at there website it does say something about "instant-on" technology...but looking at there FAQ its BS
How does NetZero HiSpeed 3G work?
Data Compression and Image Optimization - Before the text and graphics that make up Web pages get sent to you over your phone line, NetZero HiSpeed 3G compresses them using a proprietary technology. Less data is sent so your surfing experience is much faster!
Memory Enhancement - NetZero HiSpeed 3G uses caching technology to store elements of frequently visited Web sites so they load faster on future visits. So in addition to an immediate boost, your surfing will get even faster as you continue to use NetZero HiSpeed 3G.
Continuous Optimization - NetZero HiSpeed 3G continuously optimizes the communication between your system's modem and our network while you are online. That means that it is always working to shorten the amount of time it takes to connect you to the sites you visit.
Pop-Up Blocking - NetZero HiSpeed 3G features a pop-up blocker, which means that you no longer have to wait for annoying pop-up ads to load.
How does NetZero Instant On work?With NetZero Instant On!, you can tell your computer to connect to the Internet daily at any time you choose to automatically retrieve your email and favorite Web content such as your weather, important news headlines, and the content of your favorite Web site. Then, whenever you sit down at your computer, the information that's important to you is right at your fingertips.