Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - http://web.archive.org/web/20141218222735/http://yt3.ggpht.com/-bonZt347bMc/AAAAAAAAAAI/AAAAAAAAAAA/lR8QEKnqqHk/s88-c-k-no/photo.jpg