Using exact title in blog post doesn't matter much. Use it only if it is required otherwise there is no need. Genuinely written blog posts are better as compared to those where keywords are deliberately pushed for SEO reasons. Search Engines are more intelligent now and I believe they do flag such activities.
It is not required to use whole title in blog post as keyword. In your case keyword is "WHT forum" and you can use it 3-5 times according to blog post size. It is not good to place keywords unnecessary if it does not match with sentences. So, using keywords in blog post also need some tips and suggestions.