Further reading resources
(forgot these in the article - sorry!):
Daitch-Mokotoff Soundex: http://www.avotaynu.com/soundex.html
Double Metaphone: http://www.ddj.com/184401251?pgno=2
Celko Improved Soundex: http://books.elsevier.com/bookscat/links/details.asp?isbn=1558605762
NYSIIS: http://www.dropby.com/NYSIIS.html
Jaro-Winkler: http://www.dcs.shef.ac.uk/~sam/stringmetrics.html#jarowinkler
Levenshtein Edit Distance: http://www.dcs.shef.ac.uk/~sam/stringmetrics.html#Levenshtein
Also a minor correction to the text of the article.
The article states that the Daitch-Mokotoff algorithm returns:
"...all-numeric values between 100000 and 999999"
This should read:
"...all-numeric values between 000000 and 999999"