Compendium of internet research

Scientific American:

Says no

http://www.scientificamerican.com/article/sparkling-wine-teaspoon-myth/

Lifehacker

Says yes

http://www.lifehacker.com.au/2009/12/keep-your-champagne-bubbly-with-a-spoon/

Grubstreet says Yes

http://www.grubstreet.com/2013/06/how-to-keep-open-champagne-bubbly.html

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