If you are a subject expert, you may have written a single book, several books or a series of blogs. You may have slide decks, course handouts or articles that you have written. You have probably answered questions via email and during meetings.
The information surrounding any given subject is continually expanding and you may have considered creating a knowledgebase, wiki or encyclopedia.
For some time, I have been in this position and I have looked at a number of ways of achieving this. Finally, I opted for a premium WordPress plugin called Enclyopedia Pro.
Here is the project so far: The Marketing Compass Encyclopedia
There is a long way to go, as I have several thousand entries to add.
I am finding that this project is making me think about my subject area (marketing) in new ways and how everything fits together.
There is an SEO benefit from publishing your knowledge.
Personally, I do not have any problems with sharing my knowledge. I wonder whether you feel the same?