how do adsense text link units work?

ANSWER TO THE ABOVE QUESTION well they show up as links on the page as keywords. If someone clicks on them, they redirect you a different page with relavent ads based on the keyword clicked. If the user is intrested in any of those links and clicks them, then you get a CPC for that link the trick is to place these ads in places where they look like reference links so users click them more often.