Those measures, plus another round of quantitative easing, might perk up the economy without endangering the public finances (see article).

Let's say you have five VCs (plus angels but let's ignore that for now) and each one owns 5% so you took 25% dilution to get the round done.

Checking is easy but expensive (you have to make an extra call to SimpleDB, which is slow since it's a whole HTTP round trip plus the processing time on Amazon's side).