Writing for web or for that matter any medium these days has to deal with the short attention span problem. As a business owner, if you can figure out how to write for short attention spans, you will have a BIG asset. Copyblogger has a good post about how to write for short attention spans.
an unfortunate fact that the majority of people will only read the first few lines of it. Does that mean all the effort you poured into the perfect call to action is wasted? Not at all! But in today’s fast-paced world of communication, less really is more.