This gives member states a bit of extra freedom - some implement the laws in stricter or looser manner than the european parlament may have intended.

Some countries even refuse to implement them, as the Swedish goverment did with the Data Retention Directive (http://en.wikipedia.org/wiki/Data_Retention_Directive). See

http://translate.google.se/translate?sl=auto&tl=en&j...

(scroll down to implementation) for a while. Then they complied.