Adverts Mysteriously Appended to YouTube Clips
Disclosure: I write for (and used to edit) Gawker Media's Valleywag. This is my informed commentary.
These are just videos that one of our staffers uploaded. Gawker Media isn't going for that Mad YouTube Traffic; we just use YouTube as a repository for videos we embed on our sites. That's one of the intended uses of YouTube.
What some may question is whether Gawker Media's videos are fair use. The company and its staff argue that they are, as we are reporting on these clips as news, or making critical commentary. The preroll and postroll aren't ads; they're identifiers. Gawker Media isn't paying someone to add them.