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 - https://web.archive.org/web/20141223231609/http://www.athensvoice.gr/site/%CF%83%CF%84%CE%AE%CE%BB%CE%B5%CF%82-web/%CE%B1%CE%B8%CE%B7%CE%BD%CE%B1%CF%8A%CE%BA%CE%AD%CF%82-%CE%B9%CF%83%CF%84%CE%BF%CF%81%CE%AF%CE%B5%CF%82