Stop-losses can be useful for investors who either can't check their portfilios very often, or who simply hold too many stocks to be able to monitor them effectively.
For the average mug punter like myself, who usually holds less than 30 stocks at any one time, and who's job it is to spend 40+ hours per week on the internet anyway, monitoring is not an issue. If you're gifted with above average intelligence (like I believe I am), then for goodness sake use it! Leave the "golden rules" to the likes of Marat.
PDY Price at posting:
3.2¢ Sentiment: None Disclosure: Held