My list has done exactly what you want but in an entirely different area. ELREPAIR-L deals with electronic hardware repair and is set up for electronic repair professionals only. All of the other forums on this topic are uncontrolled and therefore get a lot of hobbyist, student, consumer discussions and comments. So we set up ELREPAIR-L strictly for the pros. We did two things to assure the qualifications of subscribers. Subscription is though the owner only (Subscription = By Owner) and we charge a nominal fee. The fee is only $4.00 per month with a two week free trial. $4.00 is insignificant to a pro who makes his living at this but it discourages non-pros and I get a little compensation for my time. :-) Works great! John Bachman, NLOFC (Acronym: Newbie List Owner First Class - one notch up from NLO) At 10:26 AM 09/08/97 -0400, you wrote: >I am in the process of setting up a technical discussion list on hypoglycemia >(low blood sugar aka idiopathic postrandial syndrome or the "brain needs more >glucose please") meant for doctors, researchers, educators and persons with >long term learned experience with this condition. There is an active self >help list on this subject, but its very nature has kept the professions away. >Also the self help list has no archiving. > >Are any of you experienced in this situation. How to keep the self helpers >off the list without chasing away experienced folk and the professions, and >with a minimum of aggravation. Is anyone particularly proud of the way they >designed there archiving or topic schemes that I could look at? > >Thanks for any help. >It's times like these I'm glad I'm nice to newbies! >Jon > >