Is this anything a trusted member is interested in? I would need this today (feb 7th)
What repayment method would be used? A prudent lender would likely only want to consider a non-reversible repayment method (e.g., Mt. Gox code/USD). Given that would be an acceptable term of the loan then this might be an attractive deal for a lender.
This is even better than Payday Lender rates which of over 400% interest (APR) with the loss of risk due to default being low (since if the $200 isn't repaid there is $240+ worth of collateral that could be easily liquidated). Even if the BTC/USD drops by 25% (e.g., from about $5.50 down to about just over $4) the worst that would happen is the lender goes just 7 days without $200.
For comparison though, pawn shops require collateral at a higher ratio than this though and even the collateral they accept isn't exposed to the price volatility that bitcoin sees.