What a faux pas, keeping a thread on topic here at QF!
From reading the follow up to a similar request a while ago on TravelBuzz, I think that the reason may be that the OP signed up for an e-mail alert for every new reply added to this thread. On FT's software, you can't cencel the request. I can understand how the alerts can get annoying if your question has been answered and a more general discussion has developed around other FT'ers' contributions.
But I suppose I have now just contributed to his problem. Sorry.