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/20150106090200/http://www.athensvoice.gr/contributor/%CE%B3%CE%B9%CF%89%CF%81%CE%B3%CE%BF%CF%83-%CF%80%CE%B1%CE%BD%CE%BF%CF%80%CE%BF%CF%85%CE%BB%CE%BF%CF%83