Keyword Stuffing With PDF Documents

Sneaky black hat SEO: Using PDF documents to keyword stuff.

“Always refining its search algorithms, Google is constantly on the lookout for new methods that attackers and unscrupulous search engine optimization (SEO) practitioners use to manipulate its system to gain higher search rankings. The practice of ‘cloaking’ to fool Google’s page indexer has been known for a while. It’s a method of serving the Googlebot with content stuffed with keywords to mislead it into thinking a site is relevant to trending search terms.” Apparently with Google focusing so much on HTML-type pages, bad guys are now looking at exploiting PDFs.