Voc+Dataset / Definition (suggestion)

One very late note after reading through
http://www.w3.org/2005/Incubator/lld/wiki/Vocabulary_and_Dataset#Introdu
ction:_Scope_and_Definitions:
 
 
Under the bulltet point for "Value vocabularies":
 
"Value vocabularies often have http URIs assigned to the value, which
would appear in a metadata record instead of or in addition to the
literal value."
 
- this sounds like URIs are nice-to-have, not as essential for LLD.
Maybe we could phrase instead:
 
"To be useful for linking of data, value vocabularies should have http
URIs assigned ..."
 
Cheers, Joachim