@gungasnake,
And from what I have listened to, most of it seems to be emulating the Motown "sound", but you may well be right in that people who were into the whole scene were there purely to jig about, rather than judge the quality of the music as a whole.
Like I say, it never really caught on in the UK other than in one specific area that accounts for about 3 or 4% of the population.
The vast majority of the UK youngsters in the 70's tended to listen to three types of music at that time, namely Motown (and other similar American labels), Reggae (Toots, Dekker, Jimmy Cliff -that type of thing) and heavy stuff (think Floyd, Sabbath, Hawkwind etc)
There was a bit of a hangover from the 60's with quite a bit of transcendental music around - and "glam" made big inroads, followed later by punk - but if you asked 9 out of 10 kids from the 70's to make a playlist from that whole era, I would hazard a guess that Northern Soul wouldn't figure in their top 100.
It's OK I suppose, but don't think for one minute that it swept the nation off its feet in any way.
Each to their own I suppose.