To see the latest murals, you can always come to this blog. Randy has also been keeping a Facebook page.
I've just started posting murals @TucsonArt on Twitter; I'll tweet the name of the mural post, the address, and a link that takes you to the post here on the blog. (I'll also tweet about mural events and artists; a lot of that probably won't be here on the blog.)
From here on the blog, you can find the murals on Facebook and Twitter feed by clicking on the links under “Favorite Links” in the right column. To follow us on Twitter, here's a button to click: