Hello, my name is Christian and I am a SEO from germany. I have some clients in america, who send me the website of pageoptimizer, a seo-tool for onpage-optimization. it show you errors (3xx, 4xx, 5xx), warnings (a-tags, alt-tags, title-tags) and notices for your onpage-seo. now it is in beta and for free. i work since yesterday with the tool and i think its very good. after the beta it is low priced and get many updates. look at: http://www.pageoptimizer.net/ and safe your beta-invite! regards, christian