what is the different between faucet and ponzi?
In faucets the money you get are coming from the advertising earnings,in ponzis you get the money of the new members that join after you when new members stop joining no more money are coming and the whole system collapses.
it is possible faucet itself will collapse?
Yes ofcourse,if the faucet earnings are lower that the payouts then the owner has to cover the cost from his own pocket,obviously no one is going to do this and the faucet will stop paying after a while.But unlike poznis you never deposited anything and you will not lose any money,it will be only a waste of your time.