This series, brought to you by Yahoo! Finance, looks at which upgrades and downgrades make sense, and which ones investors should act on. Today, we're surveying a series of new ratings on some of America's hottest consumer brand names: downgrades for Deckers ( NAS: DECK ) and True Religion ( NAS: TRLG ), but a revival of fortunes at JetBlue ( NAS: JBLU ). Fasten your seat belts, and prepare for liftoff! Deckers decked Coming off a warm winter, UGGs footwear maker Deckers Outdoor missed earnings badly Thursday night, reporting a 59% decline in first-quarter profit. Add in a reduction in full-year guidance (perhaps $4.56 per share), and the reaction was predictable: Deckers got smacked down, off 25% as of this writing. ( Don't say you weren't warned. ) But also don't get too upset if you missed the warning signs. Some of Wall Street's best and brightest also got fooled.