Starts to look rather like it's just us UK folk who know all about organophosphates! The main diagnosis I've preferred, over the years, was of Multiple Chemical Sensitivity (MCS). Until the XMRV news broke, I would have said pretty confidently that the whole thing was about environmental/chemical toxicity. Actually, come to think of it, that's probably why I've been so far removed from the CFS world until now, because I've been more interested in the MCS world. (It's a far less loaded diagnosis, emotionally speaking, and incidentally my MCS treatments are the exact same as some of the best CFS treatments: B12, Co-Q-10, Magnesium, D-Ribose, etc etc. It's a variant of the same thing, just not the one where you get constant colds and flus; TH1 vs TH2).
How XMRV will relate to MCS is a really interesting question. Of course we're still waiting for news of those 'additional factors' necessary for XMRV to become CFS/XAND, so that's a possible role for the toxins in CFS. But without something like that, the XMRV discovery seems to suggest that sensitivity to chemicals, foods, moulds etc, is a symptom of XMRV infection, rather than CFS being caused purely by toxic exposure.
It might actually fit together quite neatly. The controversy over MCS is really based on the scientists saying "but these levels of exposure are tested and are definitely safe" and the patients saying "so how come they make me sick?". XMRV has an answer: when your immune system kicks into action in response to a low level of a specific toxin, it pumps out the relevant NK cells etc, which happen to contain 'blanks' with an XMRV payload...and because they're blanks, maybe it just keeps on firing them...which would then explain why very small amounts of a given substance can have significant effects.
On the other hand, another possibility is that all the fuss about organophosphates and MCS etc will turn out to be an error, an incorrect assumption based on green ideology. Time should tell: we're now in a position to start sorting out all the different strands and figuring out all the other related conditions as well.
XMRV totally upturns all my cherished beliefs about MCS and environmental toxins being the cause of CFS. It was quite a mental shift to turn away from that whole theory and move onto something else I know nothing about: retrovirology. But once I'd seen the compelling evidence, I made the shift fairly quickly. If only the scientific world was as flexible!