I often get comments about the topics selected for inclusion in the Brigham Young University Family History Library Webinar project. The comments usually focus on the process of coming up with new topics. Some of the selections (here I am speaking entirely for my own presentations) seem to be generally of interest to genealogists and some, like the webinar above, seem to be aimed a very narrow audience.
The webinar on Beginning Danish Research focuses on the issue of identifying the exact place where an event occurs in an ancestor's (or relative's) life. This is a basic principle of genealogical research. Failure to properly identify the location of an event and then assuming that the information found is applicable to your ancestor is the basis for the very common "the same name = the same person" errors that are rampant in online family trees. It will be somewhat rare when one of my videos, even those that are seemingly of limited interest does not involve a topic of general application.
The entire theme of my webinar presentations is fostering an increased accuracy in genealogical research. The secondary theme is expanding the focus of that same research from names, dates, and places to placing the individual and family in the greater historical context.
Many of the shorter videos from the BYU Family History Library are directed at teaching the missionaries (volunteers) who work in the Library. They may seem to have limited focus, but the idea is to increase the general knowledge and competence of the volunteer missionaries. This is a good goal for anyone involved in genealogical research and especially applicable to those who are helping others.
Personally, I will never run out of topics. There is way too much to say and there is always something to talk about.