Yeah, I think it'd be quite useful. My script is very easy and as far as I remember it can break something when in your image there's such a single letter (it's stupid and inserts ~ almost everywhere ;-)). You can see it here - http://neo.mlodzi.pl/sierotki (three links described in polish: sierotki - script adding ~, pdflatex_pl described in my previous post and licence)
Now you can also try a bug I was writing about. Pozdrawiam ;-)
