This document provides a brief overview of several popular social media and web platforms, including Facebook, YouTube, Delicious, Flickr, Wikipedia, and Twitter. It describes Facebook as a social networking site with over 500 million users that allows sharing photos, videos, and communication. YouTube is summarized as a video sharing website with tens of millions of daily visitors. Delicious is described as a social bookmarking tool. Flickr is outlined as a photo sharing website. Wikipedia is characterized as a collaborative online encyclopedia written by millions of contributors. Twitter is summarized as a platform for sharing public status updates under 140 characters.