Several major French SEO firms have apparently had their sites and some of their customer sites banned by Google over spam accusations. All are members of the SEMA 7 search engine marketing group in France.
ZDNet provides a write-up in French here: French référenceurs "déréférencés" by Google (bad English translation via Google here). Le Journal du Net also has coverage about large firm Netbooster being specifically targeted: Netbooster déréférencé par Google. The English translation provided by Google is pretty garbled, but from what I can read, Netbooster denies any charges of spamming.
French search engine expert Olivier Andrieu provides his take on the events here: "Il ne faut pas blâmer les référenceurs sanctionnés" (English translation by Google).
Want to comment or read discussion of this topic? Visit a thread already going in our forums: Huge Google Delisting Of Major European SEO Companies.