I like that setup! If S3s actually looked like they had a shot to ROI, I would put a bunch of them in Corsair 540 cases and place them all around my house for heating this winter, and keep the furnace off.
Yes there are trustable sources.
There is already a thread in this forum but I couldn't find it via google.
I will try more and will post.
Using miners as a space heater is very dangerous to health.
The chemicals releasing through the hot air will negatively affect your health.