I’ve only heard of Andrew Breitbart when I was doing research for starting Wopular. I learned from Wikipedia that he helped Matt Drudge pick headlines for the Drudge Report during the early years. For the longest time, I had thought that Drudge ran his site all by himself.
I also learned that he had helped Arianna Huffington start the Huffington Post, but left when Huffington’s politics went towards the left. He later started Brietbart.com and a handful of other politically slanted sites.
The Drudge Report, Huffington Post, and Brietbart.com are three of the biggest political sites on the web. Brietbart.com has 1.7M uniques per month, Drudge Report has 4M, and Huffington Post is the largest of the three at 36M.
Although I’ve never met or corresponded with him, I do admire the fact that he was involved with and/or helped started three huge aggregation sites. I've started three aggregation sites myself. 43 is too young.