The number of websites and web companies that matter deeply. As the volume of content rises exponentially consumers and users keep looking for fast, key ways of getting to what they want. Hence the rise of Delicious, digg,  and others, like tech aggregators, where content is collected sorted sometimes analyzed and rated.

Essentially, and collectively, net users are sorting through what is valuable or not. This is important as Venture Forth points out. Quick, decisive actions occur because of the power of this aggregation. But, it puts a premium on being found. On having enough 'juice' to rate on search engines and aggregation sites.

The new net landscape is not simply a, post and people will come. It's a complex series of links, ratings, tags, search and assessment. It's made for individuals but power is shifting rapidly from old media to new media built to link to each other. 

And while we can see today's emerging winners, Yahoo, Google, digg. technorati etc, we don't ultimately where this will wind up. Or, how it will continue to shape old and new companies trying to deal with the phenomena. Because, if you can't be found, or, can't be rated, what hope have you got in an internet centered world?