As a user is working in SharePoint, a number of lists and libraries can be created.  These lists or libraries might not be relevant for everyone.  But due to the nature of MOSS and how its search crawls sites, these irrelevant lists or libraries will show up in search results.  Here is a simple but often overlooked function to optimize search results for your users.

Go to your list or library you want to exclude.  For example, I will be using list of Links that was created.  Once in the Links list, I click on the Settings drop down and choose List Settings.
 
Go to Advanced Settings under the General Settings column on the next page.
 
On the Advanced settings page, go to the Search section and choose the “No” radio button for “Allow items to appear in Search results”. 
 
Now, this list will be excluded from your next search crawl.  This will assist your users in getting the most relevant search results and they won’t have to drudge through miscellaneous lists and links.  Anyone with the appropriate permissions is able to set these criteria in the advanced settings.  Hopefully, this will save a headache for your SharePoint site administrator since I know how much you all love to give these guys tasks to do.