The biggest giveaway was during 2009 when you could mine bitcoin blocks using only your CPU and get the 50 bitcoin reward for each block you'd have found, that reward is currently worth $5 mil 
A potato PC that can mine a lot of Bitcoin. I don't have that resource even so cheap before but this is true, the biggest giveaway is this and that's prolly why we see those huge holders of bitcoins trying to awake at this moment when they just want to cash out their biggest received giveaway of their lifetime.