There is increasing concern among SEO and business excecutives that they are losing their long-held keyword rankings on Google. The concern is especially important, the execs say, because in some cases their rankings are being removed altogether for inadvertently "violating" ever-changing, and at times complicated, listing policies and subsequent penalities.

See the Let's Talk About Search Engine Penalitiesforum from Search Engine Watch for a lively discussion. Also check out the SEW blog

discussion on penalization and Google.