[IndexPointer]

There are billions of dollars on stake from both sides, search engines and spammers, in an endless arms race that has been going on for more than 20 years. Trust me, it's beyond naive to say fighting webspam is a low hanging fruit problem.

[colordrops]

Why should I trust you? I trust my own eyes. I regularly see spam sites that get to the top of results that are seen by many people for months. These could be filtered with a one line change.