Doug Belshaw has recently started a new series of blog posts about writing blog posts. I have read the first one so far, and had a play with one of the tools that he mentions, Hemingway Editor which I love ! For someone like me that tends to use far too many words when writing, this is going to be helpful.
I would recommend that you check it out !
For any idea of how it works, see below for my first draft of the above paragraph ! It also gives you hints that you can click on which told me to omit some words !