The present value calculation for Bitlanders withholdings, and buys in is calculated by a number of factors includings:  (a) Bitlanders posts earnings to local accounts on a daily basis, (b) Bitlanders changes the conditions for earning and/or withdrawing earnings on an ongoing basis, and without specific explanation of those changes, (c)  the Bitlanders site is set up to focus members on contributing or purchasing before disbursement to a personal account, (d) Bitlanders severly limits options for withdrawal, thereby subjecting the earner to the elaborate procedural requirements, and transaction fees, of the merchants with whom Bitlanders has a tie in relationship, (e) severe account deposit limitations, also limited to tied in merchants, to create the impression that withdrawing earnings might result in having to forego future buy in opportunities.  

The complexity does a pretty good job of obscuring as a pseudo employer- employee relationship what is, in fact, a Bitcoin purchase finance transaction.  A potential Bitcoin purchaser can buy bitcoin from various merchants (research thoroughly before doing this), for pay the amount of a very well established market value.  When you buy "gems" on Bitlanders, are you getting Bitcoin for value, or are you essentially submitting hard drafted articles for the privilege of buying bitcoin for a price which is higher than for its availability on the open market.