Every subtlety in Path's product is a conscious decision. Of course they intended you to accidentally message all of your contacts - but in this post I was trying to shed light on the the real victims of the spam: other app developers
Gaming is a tricky example, with gaming being a hit driven business: hits only last in the short term.
I don't believe Zynga was mislead by a viral product in Draw Something. They saw a fascinatingly simple game built by a great team, and I hope that's what they intended on purchasing, instead of yesterday's hit.