Mary Katharine Ham has what I think is a good analysis of the pros and cons of the last YouTube debate. An excerpt:

Well, I hardly think the Republic was damaged in any lasting way, and to act as if it was is overwrought. In truth, the first 1/3 or first 1/2 of the debate (the part more people watch), started some pretty good in-depth debate on serious issues that conservatives care about. It was some of the most entertaining and informative I’ve seen from the crowd this year. The second half of the debate was where the gotcha questions and secret operatives showed up, which is either a happy coincidence or a CNN producer aware of the vetting issues hedging his bets by backloading the debate to make things look slightly better. I’m with N.Z. It wasn’t YouTube that caused the problem; it was the picking of the questions and the lack of vetting. I thought Anderson Cooper was quite a bit too lax about that when I interviewed him on Monday (warning: apropos pimpage): AC: “Well, campaign operatives are people, too. We don’t investigate the background of people asking questions…that’s not our job. Last time around (in the Democrat CNN/YouTube debate), there were questions from Joe Biden’s campaign…and we had some fun with that (disclosing who they were posed by). Things like that are generally pretty obvious. In watching these videos after a while, you can kind of tell, who’s really serious about an issue and who’s just parroting a press release or a talking point.”Yikes. When you’re doing user-generated questions, there’s always a possibility that motives will be suspect and operatives involved, but it’s incumbent upon news organizations to do the not-very-hard work of Googling people to prevent it. I’m not sure how you govern the whole thing. In large part, I think we have to rely on a good-faith effort by those conducting the debate to disclose pertinent information, but in the end, good questions are good questions and I don’t think it necessarily invalidates them that they’re asked by Edwards supporters or whomever as long as it’s disclosed. I thought there were quite a few last night and they came from the real folks in the first part of the debate. CNN fell down on the job in the second half.