(My forums are all based in /forums.) When I run my sitemap generator (A1 sitemap generator), it shows a lot of index pages, on the order of: /forums/forums/support.4/page-10 /forums/forums/support.4/page-100 etc. and lots of variations (apparently sorted by different fields): /forums/forums/support.4/page-100?direction=asc /forums/forums/support.4/page-100?order=post_date etc. Are these (several thousand) pages actually going to be of any SEO use? Or should I add: Disallow: /forums/forums/ to my robots.txt?