the context was tech companies and startups you need to save a paper or electronic trail, every email or instant message should be treated as a future evidence

the context was tech companies and startups you need to save a paper or electronic trail, every email or instant message should be treated as a future evidence in court while technically US citizens don't need a business license to be self-employed, federal or local state agencies may still charge you, as some people were forced to pay for a business license just b/c they were running blogs with ads, and received some pennies in ads revenue