Guy Kawasaki, an American heavily involved in the entrepreneurship and start up financing scene, has written two provocative posts on his weblog. They make useful reading both for people writing business plans and for people involved in making funding decisions about ideas pitched by entrepreneurs.

The top ten lies of entrepreneurs looks at entrepreneurs' habit of being over-confident and exaggerating financial forecasts.

And the top ten lies of venture capitalists takes a realistic view of the ruthless world of funding, and suggests what the entrepreneur hears isn't always what the venture capitalist is saying.