Like I said, and others have said as well, value is in the eye of the beholder - if you follow your own logic, then every single aggregator, including the likes of HuffPo (something like 60-70% of their content is little "curated snippets" from around the web), are ruining the internet. There is very little "truly original" content out there, virtually every single blog rehashes the content of others. Is Techmeme of no value? Is Digg of no value? Is Topix of no value?
Also, we do actually produce some original content, we have a small staff of writers who create "featured posts" every day - sold ourselves a little short there.