GIGAOM — Marketers of all kinds have been lured by the promise of social networking, and the ease with which they can set up Facebook pages and Twitter accounts for their companies and even their individual brands. But does any of that have a tangible effect on what they are trying to accomplish? According to a new report from Forrester Research, it often does not, primarily because Generation Y users are overwhelmed with Facebook friends, Twitter and MySpace accounts already, and it’s hard for marketing messages to cut through the clutter. Forrester’s advice? Make your content more interesting...