IMHO the hundreds of millions would be better used to increase the infrastructure around bitcoin.
For example, payment systems (paypal/bitpay/Zipzap) and exchanges (derivatives/bitcoin bank not just wallet) rather than just a simple buy of bitcoins.
The bigger the infrastructure, the more useful bitcoin becomes, increasing the intrinsic value and allowing more people to use bitcoin more effectively.
Price will follow from there.
Good news for sure.
But the higher the overall value of bitcoin, the more infrastructure will naturally be built anyway. Venture capital money doesn't come in by accident. It started appearing when the value of bitcoin started increasing dramatically about 12 months ago.