Those interested in the Tongyong Pinyin vs Hanyu Pinyin debate might want to check out When in Rome, shut up and fit in, a provocative, pro-Tongyong piece.
it is almost certainly the case that the tongyong pinyin system was selected for the political reason of avoiding using the PRC’s favored method, and to further the cause of instilling a Taiwanese identity. This surely is reason enough, however.
Thanks to Taffy for the alert.
source: When in Rome, shut up and fit in, Taiwan Journal, Vol. XXIII No. 38, September 29, 2006