Some people think entrepreneurs should write to keep a log of their activities and experiences so others can also learn from it. Others disagree because it may provide competitors with ideas or the person may become more engrossed in writing and forgets or neglects all about the project at hand. I think when you decide to write, write regularly. More importantly, read relevant sources.
The tips listed on that site are actually useful not just for entrepreneurs, it’s good for anyone who decides to pick up writing.