High yields aren't a warning indicator with these three stocks.Should a high dividend yield raise a yellow flag for investors? In some cases, yes. But not always. There are select stocks out there with relatively safe dividends that also happen to have exceptionally high yields for temporary reasons or just because of the nature of the business they operate. The trick is being able to distinguish which ones are traps and which offer opportunities.To help you in your search, three Fool.com contributors have ...