This mailing list is active. You post your question on the mailing list, and the mailing list subscribers will answer those questions due to their knowledge. Most of these members of this mailing list are experienced librarians, so that the information is accurate. It is quite easy. The only thing you do is post your questions, and wait for replies.
Information is obtained from every mailing list subscriber.
I got 21 replies from 21 different members in the following two days. Each one of them tell me one to four sites. Provides a forum for sharing professional information.