See http://en.wikipedia.org/wiki/User:VIAFbot
The bot for the Wikipedia Authority Control Integration Project http://en.wikipedia.org/wiki/Wikipedia:VIAF
requires extra files:
add_text_customised.py #so encountering error reports onwiki instead of skipping
replace_customised.py #so encountering errors reports onwiki instead of skipiing
wikilinksforbot.out # a list of article names and viaf numbers to write. gets updated approximately every six months from viaf.org