A New AutoCAD Apps marketplace including plug-ins, blocks, books, file translators and more is now available now on the Autodesk Exchange in AutoCAD 2012, many FREE. The Autodesk Exchange's Apps Tab is a great place for all kinds of AutoCAD goodness, and growing.
AutoCAD App Store site
Press Release: Companion Apps Now Available in AutoCAD 2012
“Simply put, AutoCAD companion apps extend the power and flexibility of AutoCAD with the help of numerous plug-ins, from productivity tools to translators, together with other content, such as blocks and learning tools. AutoCAD users will have the ability to discover a range of apps in a single location. Coins Translate, for example, is a free app that enables designers to quickly and easily translate text in a drawing into a variety of languages, using the Google Translate web service.”
Searching Xref returns the results showing many plugins aka apps. 
Check out Brian Benton’s detailed blog posting on CAD a Blog:
Autodesk launches an AutoCAD Marketplace – the Apps Tab
Proof that cool Autodesk news does not wait for anyone, I am writing this blog post by campfire in the SE Utah desert while coyotes howl and something sounds like it is creeping up on me in the bushes. I am down here documenting many more amazing Ancient Puebloan ruins with some archeologist as well other items using the free Autodesk Labs Project Photofly to convert the digital photos to 3D automatically.
Some photos from the trip 
And finally the king of all mushrooms I have seen, a monster fungi!
Time to hit the trails again.
Cheers,
Shaan
Your photos are incredible! I love them all.
Thank you very much Dave.
PING:
TITLE: Project Photofly Produced Video of Kiva Ruin
BLOG NAME: Between the Lines
Last week I was in Southeastern Utah in the Cedar Mesa region which is one of the most rich archeological regions in the United States with sites remaining today dating back 5000 years from the Ancient Pueblo and Basketmaker cultures. This first exampl…