Is there a difference in payment per click? I'm doing some experimenting right now with moving things around and playing with other options. I've used Ad Units exclusively up until this point and now am trying some Link Units. If there a difference in the per click payout?
... true BUT this is actually your second worry. Your First should be TRAFFIC This is where most sites with adsense fail.
It depends. On some sites I get a higher CTR rate with links than ads however most of the time I receive the most income from ads rather than links.
links can be very powerfull sometimes. When they are at the footer or header the CTR can be very high. Or as a supplement to regular ad units.
usually ad units gets more clicks therefore earns more revenue for most publishers. i have not done well with link units myself but few publisher did well with link units. most visitors bail out going to the second search result page and don;t click anymore. yes, visitors need to click on a seperate pages for you to get paid
link ads usually get me nothing .. like 10 cents , my actually pic ads get me up to 3$ a click ive seen