Blog RSS aggregator

I am looking for help developing a dynamic and interesting blog aggregator. I would like there two be two tiers: one tier are "supporters" and thus their feeds are highlighted. Another level are just regular blogs that do not pay a fee to be described as supporters. Additionally, I would like to be able to count how many people viewed a blog/blog feed and rate the blog, too. I would love if this could be an easy to use format.