What does "Fresh Content" really mean?

Here is an interesting thread on WebProWorld about fresh content and its impact on search engines results.

Here is a quote from Google Guide Website about this topic:

To keep the index current, Google continuously recrawls popular frequently changing web pages at a rate roughly proportional to how often the pages change. Such crawls keep an index current and are known as fresh crawls. Newspaper pages are downloaded daily, pages with stock quotes are downloaded much more frequently. Of course, fresh crawls return fewer pages than the deep crawl. The combination of the two types of crawls allows Google to both make efficient use of its resources and keep its index reasonably current.

I encourage you to read this thread, because fresh content on your website may sometimes do miracles to your search engines rankings.