Ideal would be if you could tick boxes in the admin section and activate whatever social networks are most usefull for your users (guess each board is different depending on region, age, etc)
But the way you're doing it now seems a good idea: getting feedback and then making sets like: English (International) , Soutch Africa, English (USA), English (UK), German, French etc....
@PunBB Devs: Can you tell us which hook would show next to date in topic? IF one doesn't exist - ADD ONE
EDIT @ AdsBB : yes the link now works in starting post - maybe I was downloading too shortly after you uploaded the time I had same again....