Hegemony (from Wikipedia): is a concept that has been used to describe and explain the dominance of one social group over another, such that the ruling group or hegemon acquires some degree of consent from the subordinate, as opposed to dominance purely by force.
Linkbaiting on social networks like MyBlogLog, MySpace and BumpZEE is common, especially when Internet Marketers use pictures of bikini-clad women as their avatar.
While there’s nothing intrinsically wrong with the practice, I feel that it sets up expectations that the blogger or website owner will have to deliver on once the visitor lands on your page.
If you can keep your readers happy, you’ve laid the foundation for a successful and low cost (possibly free) traffic generation model.
The sad reality is that more than 90% of the sites using such techniques have average (and usually sub-standard) poor content.
At best, this is gimmicky in my opinion and best used for one-off, throwaway adsense-oriented traffic.
But if you’re a serious Internet Marketer in this for the long haul, you’d do much better to build your brand, which means either using your photograph, or an image which represents your online presence.