>The use of scrapers, bots, or other automated posting or downloading scripts is prohibited.
What's the point of the 4chan API then? May I suggest you reword this?
A example of scraper site is sheekyforums. It steals threads from here with the purpose of ad revenue. A example of "good" usage of 4chan's API are the archives. Needless to explain what a bot is. Cornelia is an example of bot.