Seems an unnecessarily perjorative term for those people who have concerns over the impact on local housing and the aquifers and the water table.
Ground tremors, even if small, may well have an impact on local infrastructure; The proximity of a well may impact upon house insurance, and there are persistent fears, based upon experiences in the US and Canada, that fracking can adversely impact aquifers and the water table, leading to contaminated drinking water.
In the US, population density is very much lower than in the UK, and they have vast tracts of wilderness in which to explore shale gas/oil deposits, safely away from human habitation. That is not the same as here in the UK.
A recent EPA investigation in the US links the process of frakking with contamination of 11 local drinking water wells in that particular community
http://switchboard.nrdc.org/blogs/amall/pavillion_independent_experts.html
There are concerns over the pollution caused by the process of frakking;
http://www.scientificamerican.com/article.cfm?id=how-can-we-cope-with-the-dirty-water-from-fracking-for-natural-gas-and-oil
The need to look at specialised insurance if you are near a fracking well;
http://tomwilber.blogspot.co.uk/2012/07/fracking-not-part-of-nationwide.html
And although the ground tremors are likely to be small, at least one magnitude 5 earthquake has happened in the US, and is thought to be due to a proximate fracking operation;
http://pesn.com/2011/11/06/9601949_5.6_Fracking_Earthquake_Hits_Oklahoma/
Such risks should not be lightly dismissed, and there are legitimate grounds to be cautious of such operations....