Generally, I am. They can be worthwhile in certain fields, but when it comes to entertainment industries, they're almost entirely predatory. Anything to do with video games, animation, comics, etc. is rife with taking advantage of young eager kids with offers of "exposure" and "experience" that basically equal companies getting free labor or vastly undervaluing those they do pay a pittance. On top of that, consumers suffer too with media that is not at the professional level it should be at, because the companies don't want to pay real professionals real money.