Quite agree Jim.   People don't realise the practical consequences of not crediting songs and,
the way that some modern songs can be too well known for their own good. There are major complications over getting titles of songs right and giving due credit.   The way copyright societies hold registrations can be partly mucked up by careless crediting and titling. Also spurious histories arise due to ingorance by people sharing misinformation and often wonkily misquoted lyrics. Not everybody wants payment for every printed use of their work - but surely a name and copyright details should be given on these sites.   With Scottish music they keep misusing the term 'Traditional' favourites.   But that's a whole discussion gone into many times!   See such discussion under "I wrote that traditional song"