HighYield Investing Programs

There are lots of HYIP on the net today and all claim to be reliable, successful, sustainable. But is it always/ ever so?
I have tried quite a few of them and I must admit that most of them do bring some profit but - for a short time only.  They are all but sustainable and what we should do is join as many of them as possible and for as short time as possible.
Most of them do what they promise but it never lasts for long.
My suggestion is to join at the beginning, invest and only after the first investment has been returned try to go on and invest from the earned money.
This way we never lose and we can go on investing more and more.
It might be demanding, but not too much and it pays off. 
A few most successful at this time are Profitable Sunrise, ProDailyShare, Ad4Revenue, Masterfinaces.biz.
It's like skiing! Good luck!