Google Analytics doesn't show reffering site report by default, it truncates the URL at the end of the filename, so you end up with items like:
As an example, you User Defined Report will show:
/forums/showthread.php
/forums/viewtopic.php
etc.

But you can add an advanced filter to place the referrer into the User Defined Report.
Add this filter to your Analytics profile:

- Go to Analytic Setting
- Edit
- In the Profile Settings, look at "Add this filter to your Analytics profile"
- Click +Add Filter
- Option Button choose : Add new Filter for Profile
- Filter name : Full referrer
- Filter Type : Custom filter
- Choose "Advanced"
- Field A -> Extract A : Referral (.*)
- Field B -> Extract B, leave it blank
- Output To -> Constructor: User Defined $A1
- Field A Required: Y
- Field B Required: N
- Override Output Field: Y
- Case Sensitive: N

And now you have the full referrer report for you User Defined Report.