Depends on what you mean by weed out. Each report is a signal. A single report on our site is a weak signal but still may result in a) an inspection and identification of critical violations b) discovery of an outbreak c) a false positive. One hundred reports relating to the same place same timeframe, would be considered a strong signal, and more typically results in a) and b). Our approach to handling the false positive aspect is that we roll data off our website after 30 days.