On this week's Money Matters, Scott and Pat discuss the free stock trading boom and who will ultimately get hurt.\nScott and Pat speak with a father who wants to help his son by renting a house that his child purchases. A caller asks how he and his fianc\xe9 can lower capital gains taxes on two home sales. Finally, a man with a vacation home worth $550,000 asks if he should pay down the mortgage with cash from his IRA.\nAsk a question by clicking\xa0here, or email Scott and Pat at\xa0questions@moneymatters.com.\nDownload and rate our podcast\xa0here.