Amazon and paid ads

Hi there,

Right now on CJ I'm using adwords to direct traffic to my affiliate links. Using this technique I'm making 300-400 per month profit. I'm wanting to do the same with Amazon but I wanted some input from others as to their ToS for this kind of thing. Here is a paste from their ToS:

Qualifying Purchases exclude, and we will not pay advertising fees on any of, the following:

• any Product purchased by a customer who is referred to the Amazon Site through any of the following:
  • a Prohibited Paid Search Placement; or
  • a link to the Amazon Site, including a Redirecting Link, that is generated or displayed on a Search Engine in response to a general Internet search query or keyword (i.e., in natural, free, organic, or unpaid search results), whether those links appear through your submission of data to that site or otherwise

"Prohibited Paid Search Placement" means an advertisement that you purchased through bidding on keywords, search terms, or other identifiers (including Proprietary Terms) or other participation in keyword auctions. "Proprietary Term" means keywords, search terms, or other identifiers that include the word "amazon," "Kindle," "myhabit," or "Javari," or any other trademark of Amazon or its affiliates, or variations or misspellings of any of those words (e.g., "ammazon," "amaozn," "kindel," and "javary"). "Redirecting Link" means a link that sends users indirectly to the Amazon Site via an intermediate site or webpage and without requiring the user to click on a link or take some other affirmative action on that intermediate site or webpage. "Search Engine" means Google, Yahoo, Bing, or any other search engine, portal, sponsored advertising service, or other search or referral service, or any site that participates in any of their respective networks.

Click to expand...

So from that I'm not sure if I can pay for ads that go to my affiliate link as long as I'm not using the keywords listed above - because my ad won't appear to natural, unpaid search results, or can I not pay for ads at all, regardless of keywords?

EDIT:
After some googling i've discovered that you cannot wa