A blogroll is a collection of links to other weblogs. Blogrolls are found on most weblogs.
Various weblog authors have different criteria for including other weblogs on their blogrolls. These range from matters of common interest to frequency of updates and posts to country/geography/community relations to "you-link-me-I-link-you" policies. Some blogrolls also simply consist of the list of weblogs an author reads himself, and some news aggregators allow their users to export that list directly to a weblog.
With the advent of syndicated newsfeeds, even blogrolls can be, and are being, syndicated. OPML is one of the popular ways to syndicate a blogroll in case a weblog author wants others to be able to access the weblogs in his/her blogroll.
