What's the right amount of capital for a seed round?

I've seen a lot of seed round pitches in the last 11 months, since joining RSIIC and the Park City Angels - over 300. "Seed round" traditionally refers to the first institutional outside capital that a startup company takes on to help them grow. But, when a company takes that money, what it helps them achieve (milestones), how long it takes to achieve them, and how much capital it takes to get there are moving targets. 

You can read my post on the RSIIC blog here.