snapped mine off ages ago. Has no effect from what I can tell. You can actually buy a replacement but I've never bothered.
yea mine snapped on the first day its just for show on a heli like this as its so docile its not needed, the only part ive found to effect performance are the connect buckles on the rotor head its like a little o-o shaped peice of plastic that stabilises the flybar, one of mine is missing and now the heli slights pulls to one side when hovering but its perfectly flyable, i tried taking the other off thinking maybe they arent needed but it caused horrible vibration.
my front motor which controls the lower main blades has stopped working

, just ordered a spare from ebay for £4 quid and bought a buckle set for £1.99 while i was at it.
the thing has survived about 100 crashes to i cant complain and my son loves it so ill get it repaired for him.
i keep looking at the proper hobby grab RC helis and they temp me so much
i wanted a walkera120d02s
but none sells them in this country

they seem awesome value for what you get aswell.
i guess the only other choice is the mcp x
but they dont seem to be as good value for money as the walkera

and cost the same price, i guess your paying for the e-flite blade brand name
i know its better to learn with the bigger helis like 450 size etc but i wouldnt want to fly one in/near a park (you have to get permission from the land owner aswell) , i was looking into maybe flying on the newcastle town moor which is like 1 square mile or so in size but the "freemen" douche bags seem to pretty much own the land and decide what is allowed to happen on the moor..... an RC club has exclusive flying rights and i dont fancy joining a club