We've just launched a sitemap validator as the first step towards building a comprehensive sitemap management web app and we'd like some feedback. Here's the app: xml sitemap checker 1. What would you like to see in a sitemap management application? Automatic sitemap validation and error checks? 2. How many sitemaps/sites do you manage on average? 3. Would you pay for a minimum monthly fee for a service able to give you complete peace of mind on sitemap management? This would include error checks and validation at a user defined frequency, tips on sitemap management, email or sms notification for errors. If yes, how much would you pay for it? Thanks!