denisl - 3:43 pm on Jul 5, 2013 (gmt 0)
I really dont think you can judge this with any accuracy.
My main site shows 28% direct traffic GA and I was pleased to see this figure steadily rising.
However another site of mine with 20% direct traffic recently had server probs that caused G to be blocked and hence a big fall in rankings. The rankings fall caused a drop in G traffic and the "direct" traffic fell almost as much.
This lead me to believe that the Direct traffic reported in GA is mostly Google traffic without a referrer.