Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
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?
Remember that content is the key to a successful blog, Quality scores over quantity in getting audience to your blog.