All of it, duh!

But no we plan on trading on Bitstamp and btc-e since those are the most reliable exchanges we know of. Of course we have the same concerns as anyone else that holds funds on an online wallet but we can only do much to allievate this sadly. One thing we plan on doing is, when we know we will be holding alot of fund in BTC for at least for the foreseeable near-term, we will withdraw it to our offline wallets. Another thing we are in the process of is moving alot of our own funds to different wallets on our computers to use as an 'emergency fund' in case something goes very wrong. (think FDIC insurance) We are also determining at what point/how much to keep a portion of investors funds offline for this same purpose.

Thanks for the sarcastic, rhetorical question it does give us a chance to address more things.

-tom