Taliban is strong in the North West Frontier province in Pakistan. This fatwa will have no effect in these regions, which are already governed by Sharia law and Pak administration and military have no influence in the happenings of the SWAT valley.
As they say in English "As you sow, so shall you reap". Benazir Bhutto, in association with US administration, encouraged the formation of Taliban to combat the presence of Soviet army in Afghanisthan. US in the form of the 9/11 attacks in US in 2001 and Benazir Bhutto was ultimately murdered by them.
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It will enjoy no respect from rest of the world unless use of violence is banned altogether.
Fatwa has become a joke because of over issuing it and defying it equally.
And Taliban have their own brand of religion. I don't think they are muslims.
They are just barbarians.