The plot thickens:
http://www.cs.brown.edu/~dpb/ascii-ipa.html
First, American English and British English do not have the same
pronunciation for the same words, yet the two are intermixed in the English wikipedia.
I am not suggesting we start adding pronunciation *everywhere*, but that we standardise pronunciation guides where they are given.
Some sort of IPA version has the huge advantage that the symbols can be copied to *any* other Wikipedia in any language.