Static wicks are not new but very common on airplanes for discharging excessive static into the atmosphere. During flight, an aircraft can accumulate electrical charges from air friction and these charges will eventually discharge causing radio interference. The G-Force Static Wick is designed for RC helis to control static generated by a belt driven tail system and the rotation of the tail blades. Static is more noticeable in dry weather or winter conditions. If you are using a FM system, you could glitch continuously from static, but with the new 2.4GHz systems, a lockout could result from enough static interference.

The G-Force Static Wick works on all size helis and is designed like the full size system to discharge static quickly, reducing static interference.

The following are videos showing how much static can be generated from a T-Rex 450 and T-Rex 500 tail blades, even spooled up manually at low speeds.

Video:
http://www.youtube.com/watch?v=zZg-_zU08TM
http://www.youtube.com/watch?v=MFQSzJEL_YE&feature=related