Dillon Nichols blog about his electric imp-Controlled 120Vac relay switcher build:
I bought an electric imp about a year and a half ago when they were released. I loved it’s simplicity and made a few temporary projects involving it but wanted to keep it for something more advanced. After all this time, I decided it’s better just to use it for anything rather than leave it just sitting in a box in my room, so I’ve made an internet-controlled 120VAC relay switcher for it and an “app” for my iPhone to switch it remotely. I’m sure there are other ways of accomplishing this project, but I was able to build the whole thing using parts I already had on hand. This blog post will be a high-level overview of what I did to make it.