Printable with standard PLA settings (or hotter) - no heated platen or special nozzles needed
Usable on most PLA compatible printers, such as Makerbot, FlashForge, Dremel, Ultimaker, Printrbot and others!
Great for simple circuits and interactive projects
Also experiment with ESD or 3D printed bearings!
How conductive is it?
Volume resistivity of printed resin (not 3D printed): 15 ohm-cm
Volume resistivity of 3D printed parts along layers (x/y): 30 ohm-cm
Volume resistivity of 3D printed parts against layers (z): 115 ohm-cm
Resistance of a 10 cm length of 1.75 mm filament: 2-3kohm
Here's a link to some projects: http://www.thingiverse.com/AL3xD/collections/conductive
Here's the original kickstarter: http://www.kickstarter.com/projects/1375236253/electrically-conductive-pla-3d-printer-filament