Justin Kan has been a co-founder of no less than three YC companies: Kiko, Justin.tv, and Exec. He’s also been involved with the founding of Justin.tv spin-off Twitch.tv and Socialcam. Beyond all that, Mr. Kan is a partner and part-time advisor at Y Combinator. I wrote about Exec after it’s expansion to San Diego.  Exec grew again right after that post, this time expanding to Seattle.  They also launched a separate cleaning-only app for Exec that includes a free $10 credit just for trying it out.  Justin Kan recently sat down for a chat with Valley Girl Show host Jesse Draper.  You can watch the interview at ValleyGirl.com and on YouTube. It’s also embedded below.