> The last name at birth is essential to placing your profiles in the right place. If you think your audience is more likely to speak and read Russian, post it as Russian.
Well the last name at birth is obviously in Russian: because the registered name is in Russian, because it 's at birth, because we try to follow their rules, not ours.
It doesn't depend on the audience.
But best would to be able to have LNAB (in local language) and LNAB:en (in English), etc..., just as OpenStreetMap.org does: World maps are in local language, but you can request the English names if you prefer too.
Lets search for Washington, D.C.: http://www.openstreetmap.org/node/158368533 amazing, isn't it?
I agree with the rest.