I've read a fair bit that suggests that wind power is far from the best source of renewable energy. For example:
Save the planet: Stop the Greens
Eco investors demand (even) more sweeteners for low carbon energy
Stand by for more big, windfarm-driven 'leccy price rises
'Leccy price hike: Greens to blame as well as energy biz
Climate Change 'wise men' recommend more nukes, power cuts
(The Register does have some reporters that are sympathetic to the arguments of climate change skeptics).
However, yesterday I came across the article Parkinson: why wind is cutting energy costs which claims that the deployment of wind farms is driving down the cost of electricity. Wind still relies on MRET subsidies, however its low variable marginal cost means that it gets priority over more expensive generators thus reducing prices.