Here are few things I want to tell about Updates only:
- Well updates of your post is good for those who regularly update their blogs and not regularly but frequently as the search engines give priority to those post withing 24 hours .
- You can take example of a News site which gives latest news but most of the users search it on the Search Engines and go to the site which is listed first.
- So in order to submit tutorials you should submit the whole post and not just an update.
- You can simply submit your whole post though it take time but it is good for an individual to do that because anyone can't do post whole the day but in news company's there are employees doing this.
- In WordPress it is easy to create a whole sitemap by using Arne Barcchold which is the best till now .