When you write an entry and upload in your blog then perhaps you think that your work is done. May be, sometimes you try to submit it in to some social bookmarks and email other bloggers about your entry. However, most of us don’t bother to look at blog posts that are more than one week older. Sometimes, they can be important for you. When there were some entries that are relevant to current times then you should try to work out on them. For example, suppose you have written about Christmas and when December comes then you can try to edit it and make it longer with new information.

May be you are thinking that what is the benefit? Pro-blogger Darren Rowse has written an excellent entry about optimization of old content. You can read it here: Optimize a Single Post On Your Blog for SEO

I am thinking of a different angle. For example, you have written something which is one year old and there is new information available on that topic. So, if you modify your content then it will help many visitors. Secondly, after one year you may have additional knowledge about the same content and now you are in a position to give better and more useful advice. This is also helpful to your visitors. Just remember that when you are blogging then your primary objective should be to help your readers and visitors. If you can do so then they will surely be happy to come back regularly and this means that you can increase your income.