I am not sure if there are enough people that care/realize the importance of this. I personally do.

Fortunately for me I had great English teachers in high school that designed their classes around effective communication rather than fancy writing. I still drop them an email every now and then to get their advice on how I could communicate a given idea more effectively.

Other than that I love Orwell's paper on English(http://www.mtholyoke.edu/acad/intrel/orwell46.htm) He makes great points that every blogger can learn from.

-Zaid