Researchers have predicted that video ads would explode just as online video audiences have expanded — but it hasn’t happened yet. Longer form video ads that play before videos (a.k.a. pre-roll ads) don’t seem appropriate when the video is brief. And marketers are wary about advertising around user-generated videos that have edgy content. YouTube has experimented with overlay videos and is now letting people sell their own ads. What format for video ads would you actually welcome? Relevant ads to you? Creative ads that can become their own viral videos? Ads that are tied closely to the video’s content? Which type of video format do you prefer and which one do you think will end up being accepted by video makers, advertisers and the viewing public? Share your thoughts in the comments below and I’ll run the best ones in the next Your Take Roundup.