I'm one or the TakeItAparts. I definitely agree that text descriptions are essential. The site is just getting going and we wanted to have some content on the site, but we haven't had a chance to fully annotate the guides. That said, the guide creation process allows you to add Markdown text blocks to each image (or video) as well as the guide itself, and images can be annotated with hover-over photo notes. The photo notes themselves can optionally be tagged as "components" (for part numbers), making salvageable or repairable components easy to search for and enumerate.