Hi, can I still invest in this coin? Thank you.
LOL.
This is why people will ALWAYS be scammed on here.
I
hope he was joking. The sad thing is that I can't be sure.

Well, he is a member not a newbie like I am, so... Is the stackcoin still up for investing? XD
But other than that, damn. He got away with 70 btc

Any way this guy can be tracked?
Yeah, I'm pretty sure drdejanm was joking and that MrJesusChrist knew he was, but again, I can't be sure. It's never safe to think "nobody could be that stupid..."
Based on earlier comments, the "dev" probably used TOR and his website was registered using a fake address and telephone number, so no, there doesn't seem to be a way to track him.