There’s nothing quite as annoying as seeing bandwidth wasted on unimpressive flash animations, irrelevant ads, and animated GIFs. The bad news is these ads are the sole source of income for a lot of your favorite websites – Hackaday included. The good news is you can turn these ads off with a Raspberry Pi, a WiFi adapter, and a little bit of fun in the terminal.
This build creates a wireless access point with a WiFi adapter plugged in to a Raspberry Pi. With an Ethernet cable plugged in, this effectively turns the Raspi into a wireless router.
To configure the software to block ads, it’s a simple matter of installing dnsmasq from the command line and making sure all the ads on your favorite webpages time out. This means a fairly big hit on the performance of your new DIY router, but with the installation of Pixelserv you can host a 1-pixel transparent GIF image that replaces all the ads and renders them invisible.
It’s a great project if you don’t like watching ads on your PS3, XBox, tablet, or other non-PC Internetting device. If people stealing your wireless connection is a problem, it shouldn’t be hard to make every image upside down or blurry for those rogue WiFi pirates.

http://hackaday.com/2013/09/15/turni...-into-adblock/