Inbound Link Tracking

I'm thinking of writing a little Drupal module over the next couple weeks. In thinking about what to do, it ocurred to me that one of the most often things I look at in my analytics are inbound links from other sites. I then go to those links to see what they said about my site :-)

I do this right now using off-site analytics packages, but there's no real reason that Drupal couldn't track this information itself. I could detect an inbound referrer link and store it in a new table - eliminating the need for an analytics partner for just this info. Then in the admin side, it'd be really easy to present that information - and it's a great fit for that shiny new D7 dashboard :-)

I haven't found any great fits for what it is I want to do, but I also haven't thoroughly explored the many 'statistics plus' modules that are out there, so I figured this would be a good place to ask if this is worth implementing!