A vital component of any competitive research or SEO review is research into the back links (or incoming links) for a domain.
To help with the research I’ve created a bookmarklet that will search Majestic SEO and Yahoo! with the linkdomain parameter. Both searches open in new windows.
Just drag this link to your bookmark toolbar:
I hope you find this useful, please feel free to add a comment below and bookmark this on del.icio.us for your future reference.