I've been dealing with the
SEO for a website of a
valve manufacturer. Since I started monitoring the stats for the site in May this year I've noticed a drop in the number of pages indexed (from 1000+ in May to 300+ now). In August the number of inbound links displayed in the Google Webmaster Tool panel displayed zero links. At the time I thought this maybe due to an update and figured this would come back.
However, last month this was still displaying zero links and the last index date hadn't changed and was still August. After looking into possible problems I identified some duplicate content issues with multiple domain names (co.uk, .de. dk) which all aliased to the main .eu website but retained their own domain. I've addressed this problem by using 301's on the surrounding domains so they all redirect to the main domain. I then requested a re-crawl. I've just checked the webmaster tools again and google is now showing it last indexed the site 21st October but is still displaying zero links. The results in the SERP's don't seem to be affected. Also the number of internal links is displaying zero.
Has anyone come across this problem before? Could it be a symptom of a problem such as duplicate content or a bug in the google control panel? If it's a duplicate content issue which has been resolved will the links come back?