Slack's pull factor? My boss told me to use it. And, it's better than email for workplace communication. Stack Overflow's? In my case, reciprocal altruism. I g

Slack's pull factor? My boss told me to use it. And, it's better than email for workplace communication. Stack Overflow's? In my case, reciprocal altruism. I get a TON of benefit from it, so I like to contribute to it. Y-Combinator's? I'm not sure, but here I am using it.