The term "freshness" as used on Technorati refers to when the last post was made on a blog.
For one blog I have the "everything known" page says the blog was last updated 1 day ago. Yet my favorites page indicates the blog was last updated 13 days ago. A freshness variance of 12 days. This same blog also seems to have questionable content and a few days ago Google ads stopped showing on it. So I do not know if this is a precursor to flagging, or if this is some strange hiccup in the Technorati data warehousing updates.