Wifi antenna

http://www.amazon.com/Alfa-AWUS036NH-Wireless-Long-Range-Screw-On/dp/B003YIFHJY/ref=wl_it_dp_o_pC_nS_nC?ie=UTF8&colid=31DMCG7KUFQMA&coliid=I3FPXABY30MYDA Has anyone tried one of these? I was thinki...