Free servers are great until you can't find that one last piece you need to complete the binary you have been looking for. If you want reliable newsgroups with guaranteed connectivity and good retention you should check out one of these commercial usenet providers.

Free and Public news servers are visited once a day and their information is added to my index. In addition another task visits servers on a rotating basis and their article headers are indexed and random messages are tested to see if they are really on the servers. This information is used to calculate the binary and text group article retention figures.