I think what has happened is that the WHO always said that IRS (indoor spraying) should be used in certain areas: namely, areas where malaria levels fluctuated. One reason for this is because IRS lasts for a long time and also has a deterrent effect... it's a cheap way to keep insects from resting on your indoor surfaces for a couple years. In areas where there is a lot of Malaria, high levels all the time, they recommended other methods of control.

Now they recommend IRS for all areas, which is where the critique in the second post comes in.

Where the WHO press release (and subsequent news articles) were misleading is in the quote: "in the 1980s the World Health Organization joined other NGOs and government organisations in ceasing to promote ‘indoor residual spraying’ with the insecticide DDT as a method of combating the spread of mosquito-borne diseases, especially malaria."

They never stopped recommending it, they have just started to push it more aggressively.

That may seem like nitpicking, but it is highly annoying to environmentalists like myself, because it comes in the context of a long campaign to discredit environmental groups who don't like DDT. Once again, I recommend that anyone who's interested head over to Deltoid where Tim has been keeping up with this for a long time.