My new obsession with Twitter (follow me as @draab) has led to several messages from people who seemed to have trouble choosing between Eloqua and Marketo. Pardot : another pretty powerful product; see my blog review from December 2008. Treehouse Interactive : another company I spoke with recently, and another one I’m not writing about yet because they showed me some features that won’t be released for a while (early March). The company has a low profile but has been selling its demand generation product for nearly ten years. Just kidding.or Maybe next week.