Soo to get my post count up: I learned about bitcoin almost 2 years ago, and started mining with my 5650m AMD Laptop
I made it up to 8 bitcoins, which was around 80 bukcs around then. I let them sit in my wallet, but i didn't encrypt it... and I got hacked, coins all gone
Would have been almost 1000$ by now :'-(
So always secure your wallet!