Re: what did you do to your motor bike today?
I have thrown my chain 4-5 times and it was always laying in the street behind me like a dead snake. No such luck with the master link. I have considered putting a drop of something (thread locking compound, clear acrylic nail polish, even superglue) on the master link.
What I have done is buy 10, 420 sized master links. Got them for $1.06 each before shipping. Note to self: keep spare chain in backpack like spare inner tube.