I suggested a while ago in these pages that one reason for the wide use of Wikipedia was that it was an 'addressable knowledgebase'. Entries enter the web conversation because they are referencable, they are on-web. In this context I was interested to read in Bubblegeneration:

In many cases, communities exist to overturn "expert" orthodoxies - by hacking, tweaking, and remixing things. The point of Wikipedia is not to be the "best" encyclopedia - but to revolutionize the terms of "best" from most accurate to most ubiquitous, up to date, and easily accessible one. [Bubblegeneration Strategy Lab]

• An addressable knowledge-base
• Beam it over