Get Info on a contact with an AddressBook entry and you'll see fields like:
url 8931AB32-E4FC-11D9-8EBF-000393B9947A
homephone ADF5F16B-3EFD-11D8-93F5-000393A8C5E8
homeemail ADF6227A-3EFD-11D8-93F5-000393A8C5E8
Some contacts also show "workim", "workaddress", "homeim", "homeaddress", and various other phone numbers in the same way. Those fields aren't useful so should not be included in that form since they are already included in readable form as "homepage", "phone (home)", and "email (home)". Note that the "*im" and "*address" fields are not shown in a human readable form.
This problem is also present in 1.3b3.
Also, while on the subject, AddressBook cards imported from a directory also have this field shown:
remotelocation (ldap) ldap://ldap.smi.sendmail.com:389/ou=People,dc=sendmail,dc=com??sub?(&(givenname=Gregory)(sn=Shapiro))
This probably shouldn't be shown either. However, if you do keep it, it should be fixed as Adium makes it into a link but only linkifies "mi.sendmail.com:389/ou=People,dc=sendmail,dc=com??sub?(&(givenname=Gregory) (sn=Shapiro))" as a link pointing to "http://mi.sendmail.com:389/ou=People,dc=sendmail,dc=com??sub?(&(givenname=Gregory)(sn=Shapiro))" (see attached image).