Avoid using SMS abbreviations in blog post and at least run the post through a spell-check in MS-Word before publishing. If the bloggers cannot take the time out to write proper English, why would the readers bother reading through that cryptic puzzle?
Incorporate gadgets and widgets on your blogs so that people who drop by your blog can keep a tab on what you will be writing next.
Its not just good content that matters, presentation of post is very important too. Have attractive pictures, fonts etc to hook the readers.