A "thin" eportfolio is not an information silo, but can channel content from many of the social media sites that are listed in this survey report. The commentary behind this this is very interesting: in education, practitioners use these tools for both learning and teaching. In the corporate world, practitioners are still creating linear e-learning solutions. This may change over the next few years, opening the way for eportfolios to act as Personal Learning Environments., or tools for Personal Knowledge Management, as some would express it. "It's not what you know, it's what you can think of in time..."
Blog post: "The Top 100 Tools for Learning 2012"