Autopoll Module adds more options to your Joomla 1.5 poll handling, for instance, auto detecting and displaying the current poll. The custom mod_poll requires you to specify a particular poll, but mod_autopoll will pick up one based on different criteria (random, latest, voters) if no poll is given. You are also able to specify more than one poll to either display or exclude.
Once you have created your ad units within your AdSense setup, this light module will allow you to place Content Ads and Referrals, and list multiple Ad Ids to randomly sort on every page load. Just make sure they all match a unique size!