Linkgrand- is it not useless?

I have read many people recommending it. Atleast at my end its a total waste of time site, hardly pays a penny for going to number of advs. If there is some other way to use it,which I am not doing ,then please let me know. I am on it from past 3 or 4 or 5 years, don't remember exactly and I am not at all near to the payout also. I don't get it ,why people recommend it? Whats is the best way to use it?