I've recently updated Corset to fix some issues with UCC (User-created content AKA Korean YouTube clones) sites. Among the filter updates, I've had to add the following.
The sites that I've encountered all serve their videos as streaming Flash from their ad subdomains. So I've whitelisted a couple of EasyList filters that were blocking the videos. Are there any negative implications by whitelisting those two filters of the "other" variety that you can think of?