There are many advertising on the internet world if you go to browse the website. To get more faster browsing and save the 3G data, you need to use Android App to help do that. Adblock Plus from Google Play blocks all annoying ads on your phone or tablet without root required.
I have installed Adblock Plus on my nexus 7 32G model. First impression is very positive. It works ok while used the stock browser and chrome app. It also remove the built-in ads of some apps.
However, some apps completely cut off from the internet. If I open a YouTube video to watch, it just says it has a network problem. For IM messager, it is useless to me. It constantly turns off and then blocked all connections. Hope the developer fix the issues soon.