Videos and podcasts are very popular and can be used to promote your practice. Google and other search engine love them. Of course you can spend a lot of money producing them, but there are other options.
Attend this seminar and learn:
Several ways you can create videos and podcasts without spending a lot of time or money
Topics of videos or podcasts to produce
Who to include on your videos and podcasts
Where to put these videos and podcasts to promote your practice
What to do to optimize them so they will show up on search engines
Where to transcribe your video or podcast into text for just a few dollars