Ethics online netiquette for digital citizenship. Equality first. Good behaviour too. So, we all get along. Based on the truth standard that created civilisation.
This value assessment applies to the business of sharing goods and services as well. Furthermore, a one to one relationship for engagement. You do this. I do that. The rule of reciprocity. I will give you this. You give me that. We agree the exchange is equal.
Use ethics for making friends. Help each other out. To buy goods and services at a fair price. It follows, sell items and labour fairly. In order to trust each other online based on your track record of interaction. Like for like.