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/20120221182847/http://terrariviewer.codeplex.com/project/feeds/rss?ProjectRSSFeed=codeplex%3a%2f%2fwiki%2fterrariviewer