What Matts said on optimizing URLs: Do not put your blog at the root of your domain. Try putting it on a subdomain or a subdirectory. People will link to your root domain and to your blog. That will be an extra pagerank point and a room for future expansion. But, if you already have in the root, it?s not a big deal. Consider this only if you?re starting a blog. Use dashes to separate keywords in your URLs. Google is considering underscore as a good keyword separator. Dashes and underscores are better than no space at all. Though Google can segment keywords from combined words without space. Don?t change URLs of your old posts and do a permanent or 301 redirect, if you?ve already done it with no spaces. But use dashes in your future post URLs. You may use URL extensions such as .php, .asp, .cfm, .htm, .html, etc. except .exe. Dynamic URLs with question marks or hash marks are treated by Google as static URL but keep the number of parameters up to 3 only. Otherwise, it will not be crawled by Googlebot. Google doesn?t really care how much or how detailed your URLs are. Page rank flows completely independent of how many slashes there are. Standardize your URL. Choose one from: with www, without www, with slash, with /index.*. Search engine treat them as different URL and you will not get the full credit if the your backlinks are in different format. Analyze your backlink URLs before you decide. Use your own domain name in your FeedBurner feeds thru .It?s free. So if you wanna get rid of FeedBurner you can always just leave it behind. And, changing to your own domain name will have no impact to your old FeedBurner URL.