1) Get it listed on Google maps with the right keywords, this was the top walk in traffic generator and best bang for bucks because local listing was free.
2) Created a webapp to generate ads for Kijiji and Craigslist, app saved adds for later use, this could have been done with any word processor but I found that the owner liked the specialized app more.
3) Get it featured in Kijiji's repair section, after Google this was the best driver of traffic. Craigslist came in last but still a very valuable source of customers.
This was enough to get the owner and his tech too busy. I didn't test facebook, twitter and adwords, but the owner showed me one of his competitor using facebook really well for promotions. If iCracked can somehow streamline management of these channels then it has the potential to become a very valuable service.