Let me help; here is the contract:
https://glbse.com/asset/view/BMF

Here is BMFs portfolio:
http://tsukino.ca/bmf/holdings-nav/

Note that obsi.hrpt has nothing to do with mining, and its hard to defend Nyan being a mining asset.
One could even  point out the contract doesnt allow for usagi to buy mining hardware.

Now personally, I wouldnt give someone a scammer tag over something like this.
However, if you are looking for a better reason, I would  suggest you look at this post:

https://bitcointalk.org/index.php?topic=112734.0

Those are demonstrably lies. First of all, the highest bid is currently 0.4104.

Secondly, if you calculate the NAV using usagi's published asset list here:
http://tsukino.ca/bmf/holdings-nav/
After you correct the prices and you list the fpga and asics at actual list value and not 20% above BFLs listprice,  I got to  0.262 BTC per share at the time it was posted:
https://bitcointalk.org/index.php?topic=112734.msg1219660#msg1219660

Meanwhile he has been buying up some of those shares causing the nav to rise to ~0.3, but it was never anywhere near 0.5 BTC and saying that was a big fat lie intended solely to mislead potential investors, and talk the price up because his Nyan bonds are heavily invested in BMF and in big trouble.
I suspect the wannabee lawyers here will have an opinion on whether or not thats even criminal.

FWIW, here is an up to date NAV:


1334 BTC worth of assets (even assuming obsi's ponzi is worth face value, its not like you can sell it) for 4585 bonds. Thats 0.29 BTC/bond