What are some good Article submission websites who gives instant approval?

In my opinion, there are no "good" article submission sites that grant instant approval. If you are looking for ways to promote a site externally, you want to seek out the most selective sites with the very highest standards and significant user bases which could sent traffic to your article. The only value article marketing has now is through growing your audience so it is imperative to write extremely high quality content that cannot be found elsewhere. That said, if that kind of effort is going to be put out, might as well place it on your own site. Article writing for generating backlinks is no longer viable for SEO.

Humanthink and Bookmarking Star are great instant apporval bookmarking sites..http://www.humansthink.com, http://bookmarkingstar.com