If you're ever looking for product mockups using nice looking 3d device placements, then this should be on your list. Especially considering it's free, unlike many other options out there.
Threed looks great, probably going to use it for Dribbble shots!
I can see the potential in this tool however it needs a few tweaks before it becomes something I can use. I would love to have more control on the glare such as a sliding scale rather than just 'on' or 'off' (both of which don't look realistic enough).
Keep going, it's a great idea :)
I have tested Threed but could not effectively upload any image.
There are plenty of mockup options, but this takes the idea to another dimension, literally. Simple to use, features work as expected.