How to change comma seperated list of words into taxonomy terms

Hi there,

Firstly many thanks and congratulations on providing such an insanely useful module. I'm impressed with how well it works and intuitive the user interface is.

I have a question.

I'm using a regex which produces a string of keywords separated by commas e.g:

"Buffer Stock Saving, Capital Flows, Foreign Exchange Reserves, Net Foreign Assets, Small Open Economy, Sovereign Wealth Funds"

I want to add each of these as a new taxonomy term but currently it adds the whole string as a taxonomy term. Is it possible to do this? If not where would be a good place in the code to get started making this change?

Thanks very much,

Neil