none said:
...
... When did the .srr and .sfv files come out? (ok see it was late 2008) Was trying to track down when .nzb's came into existence recently and haven't found anything certain, but leaning towards early 2003...
SFV files have been around for as long as I remember. 2008 sounds about right for ReScene SRR files. NZBs were devised late 2004 - article here.