Javascript and Flash ads are the more immediately dangerous ads, but you can still distribute malware over image and text links. You just move from exploiting browser vulnerabilities to exploiting user trust, like all of the imitation VLC download pages that have popped up over the years.<p>We&#x27;d be better off with only static image&#x2F;text ads, yes, but malware distribution by means of poorly vetted advertising wouldn&#x27;t totally vanish.