This one could actually be fun. This hack allows you to flip and invert characters and/or blur web pages for your WiFi theifs. If you are not too technical, this might not be for you. Detailed instructions here.
“My neighbors are stealing my wireless internet access. I could encrypt it or alternately I could have fun. With a few snippets of code here, a little copy and pasting there…and you can invert their browser, make the page blurry, and more. Step 1: Split the Network –
I’m starting here by splitting the network into two parts, the trusted half and the untrusted half. The trusted half has one netblock, the untrusted a different netblock. We use the DHCP server to identify mac addresses to give out the relevant addresses. I could definately have some fun with this…just think of the possibilities..”