Taking screenshots ingame is easy and requires no third-party software or anything. Simply press "C" to take a screenshot and these will be saved as high quality PNGs over in Documents\SimCity\Pictures. There's also an option to automatically hide the UI when taking screenies (or videos) over in the settings if you like. You can then upload these to minus.com or similar ready to post up.
If we get some other submissions to this thread other than myself I'll transfer some of the images over to our gallery from time to time with the others I've already uploaded.
I'll start us off with a few pics of the city I started last night
Here's an early screenshot I took when most of my city was low density with a little mid:
Later on. You can see Ava's city over in the distance near the bridge too.
As it stands now:
