I preach regularly as a part of my ministry in the Evangelical Lutheran Church of Iceland. I have adapted many of these sermons to the web and published them on on Trú.is and/or arniogkristin.is. They have been widely read and shared.
15 seconds on instagram
I have also experimented with posting brief sermons on the web that make use of possibilities inherent in different social media sites, e.g. 15 seconds of video on instagram. An example of that can be seen below.