yimg.com is a domain used by Yahoo Buzz which is an widget company that is part of a network of sites, cookies, and other technologies used to track you, what you do and what you click on, as you go from site to site, surfing the Web. Over time, sites like yimg.com can help make an online profile of you usually including the sites you visit, your searches, purchases, and other behavior. Your profile can then be exchanged and sold between various companies like yimg.com as well as being sold to other advertisers and marketers.
More about Yahoo Buzz:
What is Yahoo Buzz? It's the place where you can talk about and shape the best stories people are reading right now.
Sites using yimg.com to track you: