Lots of links, lots of repeated key words, and multiple postings of a press release to different sites, are all red flags to Google under the new rules. Such actions are viewed by Google as blatant attempts to trick its algorithm into ranking a site higher than its allotted position.
Yet these have all become standard practices at PR agencies. Did Google just kill the PR business?
The fact of the matter is that Google and PR agencies earn their money in the same way: promoting businesses. Google does it by selling ads on its AdWords or AdSense networks, and in return it directs lots of traffic to the site.
They don’t see themselves in this way, but PR agencies are essentially engaged in a form of SEO (Search Engine Optimization). Google is at war with SEO companies and is trying to wipe them out. –ZDNet.