Make your posts visually appealing. It really helps in grasping the attention of the reader and adds value to the post.
Write regularly, neither too often nor too rarely. Two to three blogs a week is a good frequency to maintain.
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?