Click on the title to go to what is possibly the vastest steampunk site on the net. It has been running for seven years, and would have certainly made it into my recent top 5 except, 1) that was for blogs and 2) this site was in Polish. They have recently finished updating it to make it English, too.
Great site, great content, great links.
My idea of the top 5 steampunk blogs is found here. http://steampunkworld.blogspot.com/2009/03/top-five-steampunk-blogs.html