Dave Sifry’s recent “State of the Live Web” report emphasizes the importance of tagging all your online content so it’s more easily found. The Technorati guru explains how tagging allows search engines to scan across all kinds of media including blogs, video, photos, and audio. (A tag is simply a descriptor that you, or someone else, assigns to online content. You can tag content using your own blog platform, or by using Delicious, for example, to make it easier to find later.) Sifry says that tagging not only helps categorize social media but that it also indicates where people’s attention might be at any given moment. Technorati is seeing “explosive” growth in the tags index as people click on tags, and Google features tagged media in its results page.