If you submit your backlink (or new page URL from your site/blog) to digg dot com, it will appear in the BigG within 24 hours or so. But, it still may not appear when you use the link command. But, if you sign up for BigG webmaster tools here:
hxxp://www.google.com/webmasters/tools/
and then create an sitemap from here:
hxxp://code.google.com/p/googlesitemapgenerator/
then upload your site's G sitemap to your root. Then log in to your webmasters account and submit your sitemap and verify your site (they will tell you how to do this) Then, very soon after that BigG will crawl your site and give you more statistics on how people are finding your site in the BigG matrix and also show you more backlinks, search phrase queries, top search queries, anchor texts of the backlinks that the Googlebot sees, content analysis (i.e. duplicate title tags, duplicate meta tags etc.) and more. But, even if you sign up for a webmasters account, I don't think that they show you all of your site's backlinks. However, they do show you MUCH MORE than just by using the link command. Check it out!