Depends on where you get the degree from... unfortunately this nomenclature doesn't work if you tag the name of the institution on the end.
Degrees from red brick unis are still worth the effort...
Same with many good Polys...
I certainly wouldn't and only know one person that uses BSc at the end of her name on Facebook, she struggled through to just get a pass...
I don't know anyone i work with or meet that has their degree on their card, but then again having just BSc on your card would probably be "looked down upon". Almost everyone has an MSc or PhD. and you don't generally realise the latter until it comes up in conversation in relevant discussion...