Basically, observation probably doesn't apply to the macro-scale, and the Universe probably isn't metastable anyway so, while it's possible that observing dark matter is a bad idea, it's profoundly unlikely.
In the comments Blake Stacey (of Science after Sunclipse) points out that theoretically dark matter/energy doesn't interact with "light" matter/energy, so the observation wave-collapse shouldn't apply anyway.
Comments
A response to the New Scientist article that started all the recent hype about this...
http://www.starstryder.com/2007/11/26/i-see-you-now-you-must-die/
Basically, observation probably doesn't apply to the macro-scale, and the Universe probably isn't metastable anyway so, while it's possible that observing dark matter is a bad idea, it's profoundly unlikely.
In the comments Blake Stacey (of Science after Sunclipse) points out that theoretically dark matter/energy doesn't interact with "light" matter/energy, so the observation wave-collapse shouldn't apply anyway.