Over the past year, hundreds of you have asked Whistleblower for help. While we can't investigate each tip, we want to share more of what you tell us. In 2009, we started publishing a few tips each week to stimulate online discussion and create ways for our readers to help each other. Unlike our news stories, we have not verified this information. If you have a tip, send it to whistleblower@startribune.com.

A resident of a northwest suburb wrote Whistleblower to complain about a man selling clunkers out of his house:

Should he turn in his neighbor to authorities? Or just mind his own business?