I just briefly scanned through it and the Keyword-Advertising part starts at page 5 of ANNEX 1 (actually page 9 of the .pdf document). The paper is quite up-to-date, as it already includes a short analysis of the ECJ’s Portakabin decision. The paper, due to its brevity, doesn’t deal in great detail with the underlying legal challenges but might for sure be a perfect starting point for someone trying to get an overlook. (clear and correct terminology used!)
The paper furthermore analyses Keywords Advertising cases in e.g. China, Israel and Argentina and also covers the topics of Liability of Internet Auction Sites for Trademark Infringement (ANNEX 1, page 1) as well as Trademark Infringement in Virtual Worlds and Social Media (ANNEX 1, page 12).
Two minor caveats: Some of the facts of the Austrian Wein&Co case are slightly wrong or maybe over-simplified and… hm, I apologize for my undoubted geekyness here but … it’s ‘AdWords‘ guys, or are you working for the WiPo? 😉