|Fresh Content and Seo (Image source:- Moca)|
Blog- A blog is meant to be updated regularly. Hence, a frequently updated blog should weight more in the eyes of Google as compared to a blog that is less updated.
Company Website- If you are having a company website where there is no possibility to add fresh content on a daily basis then you don’t need to worry as this signal does not works for your website. Your ranking would remain safe even if you are not making changes into your site often.
Informative Sites- If you are the owner of a website that is providing informative content then freshness can play a 50-50 role. Some pages may require fresh content while others may not. For example, pages discussing history or discussing some research work are valued more if they are old and does not need frequent updation. But if you are discussing about budget can change every year.
News Sites- As the name suggests itself, news sites are there for providing fresh news to its audience, and hence it is a strong contender in the race of fresh content.
Here is a video from Matt Cutts. Explaining the relevance of fresh content and rankings:-
Top Seo Ranking Factors 2012
Google Human Quality Raters Do Not Influence A Website Rankings Directly
Battle of Ranking Continues
Google Ranking Factors