The practice of less is better in your content can work like a dream.
There is no need for extra words, if extra words in your blog or your post serves no purpose.
If you were trying to get a point out in your blog about your product then make sure that this is being heard. If you fill your blog or posts with "fluff" just to reach a particular word count then the real message can become hidden or the reader may go off in a tangent.