Websites are different from other places where you need to write. It is important that people can easily understand what you are saying. Writing in long, over complicated sentences is not a good idea on websites, as they are much harder to read that paper based writing.
Set your text out in easy to view paragraphs with minimal fuss – try to keep the font size reasonable and use bold headings to break up your writing into manageable chunks. Readers online will appreciate the text being split into different groups or catagories, allowing them to see what is being said much more clearly.