A person Donal Keegan asked a question in the Google Group that Does affiliate ads make the blog spam.
He told that his blog has been marked span.
The Reply he got from the Blogger's top Contributors are Surprising:-
They told that yes Some Affilates can cause a blog to be deleted as spam. Google Recommends not to caught in Affilate Marketting sites.
Then the Donal Keegan Posted his comment that he was not using any fraud affiliate ads
Also they told that "The Affilates which Google suits are AMAZON & GODADDY".
Use the Affilate Ads properly only after checking the reviews about the affiliates.