So I've been doing some research for my first niche and I've come across some material on forums. Basically someone created a new thread talking about their emotions and feelings that deals with my niche. Would it be ok to copy this information and use it in a blog to promote my product? I can change some of it but, the opening statement and first few sentences are so well written, I'd really hate to change it. Again, this is not from another sales letter or article. It's just someone that created a thread and talking about their current situation and how they feel about it.
All I'm really asking is, would it be ok to use the first few sentences and just change up the rest? I just don't want to do anything that will hurt me in the long run. I'm completely new to this so any advice would be greatly appreciated!