Sharing in a unconditional manner means, to share free from expecting anything in return.
But is this really possible or is the word itself an oxymoron?
To start answering the main question let's have first a look into this question.
Why would you share if you're free from believing in the possibilities and the impact the act is creating itself?
If we get an understanding to this answer we may will come closer to the question:
What means unconditional (sharing)?
If the conversation will lead to an outcome that unconditional is an oxymoron I invite to have a look into the effects of using words, which are in their own definition already impossible.