In the example of FastMarket, this is from their FAQ:
Quote:
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You can withdraw your principal after 6 months with no fee. If you wish to withdraw principal before 6 month, a fee of 20% will apply
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You can of course let it stay, and compound further.
How long you want to do that, depends on your 'guts'

I always advise to get the principal out, and reinvest/compound part of the profit from there...
Other programs, like i.e. FeederFund, has compounding as default.
Your investment will keep compounding, until you withdraw, and there is no lock period for your investment.
FeederFund is one of only two programs, in which I dare compound at this time.
And no, the other one is not FastMarket
Recent events with several good rated hyips which left the scene all to soon, set their marks...