How you lose your money from trading altcoins? it is the effective way to earn a profit from trading. Maybe you have only a few strategies on doing trading with altcoins or you sell your coins in not right time.
Thats a weird question for me. Same like a person who ask you, why did you lose in gambling? Then the best answer is "luck".methods for growing bitcoin is by way of investing in a variety of favorable sites and participate sig campaign 
What kind of site that you've invested your money?
i think participate signature campaign is not one of the method of growing your bitcoin
because you dont need invest your money to earn bitcoin
but i think they would get their money as soon as posible
if they're followed good signature campaign