Can someone use your ideas and posts on social media platforms without your consent?

Last week we were asked to do a blog on Intellectual Property; in the sense that someone complained to us that people were using her ideas and posts on social media platforms without her consent.

Can they do that??

Intellectual property, in its broadest sense, can be an invention, an idea or a process/method of doing things that is the product of your work and/or your mind and would include registered trademarks and patents which are formally registered; but also your songs, music and even your blogs, writings, essays, articles and other writings such as poems, letters etc. They all form part of your Intellectual Property. You have the copyright in your IP.

So the question arises can someone else use your ideas?