User blog comment:DaNASCAT/Technical Update: November 6, 2012/@comment-452-20121106185618

An opinion on video:

The problem with video- and image-heavy wikis is that while a picture is worth 1000 words, the content in videos and images is not searchable, and people who add videos and images rarely take the time to add the same 1000 words to the article.

Images and videos are great sources for information, and great things to have available to refer to examples, but they do not make a wiki.