Here's the story: I brought my bike in for a tune-up and I asked the mechanic to check and make sure it was safe to ride. After servicing the bike, he said it was old, but in decent shape and didn't have any issues.
As I was walking out the door I noticed the crack in picture. I told the mechanic it wasn't there before, and asked him if I should be concerned, (especially since I'm roughly 250lbs). He said "you probably didn't notice it" and that I shouldn't be concerned. I'm no expert on bikes, and took his word for it. Stupid me.
I took it to another LBS the next day, and they said I should replace the crank arm immediately, and it is pretty dangerous.
The LBS who serviced the bike said they weren't at fault, and that there was nothing they could have done in their shop that would cause this type of damage.
Is this true??