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I am working on optimizing a client site that was launched in January of 2011. A number of back links are starting to show up when I do a competitive link analysis, however in Google WMT the only IBLs that are showing up are from the non-www of the domain, even though I have a 301 redirect from danwilson.ca to www.danwilson.ca (and has since the site launched). I also have verified the non-www version with WMT and declared the perfered domain as www.danwilson.ca. Any ideas why the non-www domain links are being shown as inbound links by Google WMT rather than internal links. This likely means the site is getting dinged for duplicate content...