I'm very new to this whole game, but I do think I have something important to add to this topic.
I came to Wizzley from Suite101 (which isn't to say that I've abandoned everyone there. I posted an article there only yesterday. :p ). One of the options when I joined that site (in July 2011) was Google news accredited articles.
I leapt on it! The vast majority of my articles were topical and newsworthy. When the Occupy Movement were meeting up on Sept 17th 2011, I already had my article written and ready to go. It beat them to the starting line by quarter of an hour.
They got huge and I followed it all the way. I was also reporting on Amnesty International and Anonymous operations. It was great!
In between, I found time to add in some evergreen pieces. All of the veterans were quietly warning me, but I was a noob. I looked at the difference in hits between the evergreen and the news, and laughed in their faces.
Then Suite101 was no longer news accredited. Suddenly I was stuck with a majority of articles which were becoming more out-dated by the day, and no real motivation to replace them.
We're now nearly a year from my first article there. Looking at my stats, all of those news ones have died by the wayside. The steady, constant and above all potentially lucrative evergreen ones are gaining pace.
I learned my lessons there. This is why the vast majority of Wizzley articles are evergreen. The Suite101 veterans were right all along.
As for Google wanting freshness, they've stamped on my fingers so often that all Google can want from me is a smack up the corporate mouth. I don't rely on Google at all. I factor them OUT of my considerations and focus instead on social networking and more ethical search engines.
Happily, such focus often coincides with what Google wants anyway, but I'm long past dancing to their tune. And I'm advocating evergreens all the way (which doesn't rule out the occasional topical, which does bring in a massive and temporary surge of hits).