If rumors are true, then new changes are coming to Google's search algorithm that will penalize sites that are overly SEO'd. In other words, sites that use keywords too frequently or have an excessive number of incoming and outgoing links will be targeted in this next algorithm change.
This news shouldn't come as a surprise. Google has never liked sites that try to 'game the system' by paying for links or stuffing keywords onto their pages. However, this is the first time that Google will openly penalize sites that are caught using too much SEO.
In related news, the popular BuildMyRank.com site that helps website owners increase links to their sites in order to boost their Google search rankings has been de-indexed from Google and had to shut its doors. It's true that BuildMyRank.com was definitely questionable in terms of legitimate SEO vs. gaming the system, and Google's move to de-index most pages on the site is just the beginning.
The future is cloudy for sites that are overly optimized for search traffic. As always, the best course of action is to focus on long-term, sustainable growth by writing quality content and building relationships with your audience across the social web. For the best results, check out my suggestions for how to increase organic Google search traffic rather than relying on SEO tactics that could work today and not work tomorrow.