Chitka continues to be a great performer for me on my blogs. They work best on product related blogs although their recent announcement of their Premium ad unit is exciting as they now offer ads with a non product focus that I’m hearing great conversions on (I have one reader who is getting $28 CPM on this ad unit).Chitika offers a range of ad units that I experiment with. I find their eMiniMalls work best and that Related Product Units are also good. Their Shoplincs product isn’t performing as well as it once did for me – mainly because I’ve been promoting it less and have driven less traffic to it. Over the time I’ve been using Chitika they’ve now earned me over a quarter of a million dollars – I can’t recommend them enough!