Here are three of the week's top pieces of financial advice, gathered from around the web: Homework for Airbnb hostsRenting out your home on sites like Airbnb this summer may be a good way to earn extra income, but it isn't risk-free money, said Darla Mercado at CNBC. Homeowners who aren't careful can end up "on the wrong side" of local zoning regulations or their homeowners association.