Most of our decisions for whom to feature are indirectly made for us while we research content and activities for our site. As we were adding Scratch to our activities, we were building a partnership through Karen Brennan, who turns out to be a wonderful inspiration for would-be computer scientists.
While researching robot technology for a different article, we came across the story of inventor, Jaimie Mantzel. We didn't have an established relationship with him so we sought him out for an interview and he was happy to participate.
No secrets really, just luck and opportunity.