Originally Posted by TheDoc

A review is basically nothing more than an aggregated news site... look across the review sites at the same exact reviews. Often the thumbs have the same name - the same shot, sections/niches/sub-sections are the same names, titles are the same, same sponsored content, same sponsor links... even if the update is a 1000 words, half of the words are the same thing across 10 other review sites...

Tubes took a hit because many aren't unique.. they "look" unique, but once you remove the look they're the same content and often words, as 10,000 other tubes.

The major guys didn't take a hit because they buy content now and traffic volume is god.