Source : Free On-Line Dictionary of Computing

well-connected
     
        Said of a computer installation, asserts that it has reliable
        {electronic mail} links with the network and/or that it relays
        a large fraction of available {Usenet} newsgroups.
        "Well-known" can be almost synonymous, but also implies that
        the site's name is familiar to many (due perhaps to an archive
        service or active {Usenet} users).