Tell me something that you've never told a stranger before.

Robots can be scary. Dystopian films such as The Terminator tell the story of a world where robots take over. But for some, robots are more like R2-D2, the cute bot from Star Wars. At this year's South by Southwest interactive festival, a petting zoo is aiming to evoke those same feelings.
 But, not just any petting zoo: a robot one.

 Blad Droid is a small robot, less than a foot high, with bulldozer wheels, a cardboard body and a smile on its face. He's cute, but asks tough questions.