I was wonder about the marketing benefit one can achieve just from providing the platform, like the social bookmarking sites and the article directories. I can see many problems, by letting others manage your content and info on the site, where is the big benefit ?
Hey homie, If I understand your question correctly, my answer is this: Article directories & bookmarking sites automatically rank high in search engines. They can provide you with a lot of high quality back links at a good rate depending on your use. Over time they can prove to provide you with a lot of targeted traffic. Many people use it as a foundation to their site. God bless.