With the large environment we have (with 574 sites), it is easy to have items that are misconfigured. One of the things that I have always wondered how to do is find sites that don’t have any site-links. Today, the Ask the Directory Services Team blog addressed this very issue. In the blog, they provide details on how to run a series of powershell commands to find sites with no site-links.
http://blogs.technet.com/b/askds/archive/2011/04/29/sites-sites-everywhere.aspx
I ran this in our forest and found seven sites with no site links! Now I know what I need to fix!