Take a moment to listen Matt Cutts on “How important is the frequency of updates on a blog?”

As time being, things are being much stronger with proof that the quality of the content plays very important role to get regularly indexed, to update your web pages, to get unique visitors, to get value of the post, to increase the quality of the links and to increase PageRank (Let me know if I missed anything here). Furthermore, it is being said that for Search Engine it is highly recommended to have uniqueness in your content AND to get desired results you need informative contents that people like to read your post and wish to revisit your website and read posted articles often.

Have a Nice Time Ahead!!!