not just about writing , but about choosing the right method of describing your ideas. let’s say that a major impact in reading someone’s blog has to do with the way that page is designed. just choose an appropriate font size and an appropriate color contrast between fonts and background. so you are not going to choose black color fot the fonts and dark grey dor the background.(same idea applies when you design your power point presentation-see micrsoft website for some power point templates)
there is one more thing: make useful all your writtings. place a weblink next to it-make it easyer for the reader.
I will come back with detailed instructions.