is the $175 hosting fee on the 1st and 15th of each month deducted from the miner's generated BTC and then BTC payouts are given to the shareholders?

Hosting: $175 per payout (1st and 15th of each month)

Is this per share or per 1 machine?

Per payout, meaning that every two weeks $175 will be deducted from total revenue. The rest will be divided amongst the shareholders.

Total mined
minus hosting
minus management fee (0.5%)
minus transaction fee's
=
total to distribute

You can see the calculation that would be used in the 9-12 payout sheet.

https://docs.google.com/spreadsheet/ccc?key=0ArdD1NXRwJNSdGxRQ0oyX29XbjlsYVZFMEx5bEJPUXc&usp=sharing#gid=0

.