rec.crafts.metalworking, or RCM, as it's known, is a Usenet group. Persons
may post to RCM, using a variety of devices, and usenet readers. Some web
forums like Homeowners Hub, and Stucco company, pretend that Usenet is a web
forum.

Posters: There are several types of people who post to RCM.
* Machinists. The group was originally founded, to provide a forum for
machinsts to discuss machine working. There are a few machinists who use the
forum.
* Wannabees. A few people read and post, who are not machinists. These folks
can be curious, questioning, ammusing, and somtimes clueless.
* Trolls. Some people have no interest in machine work, but only throw
insults, and try to stir up hard feelings.
* Spammers. Some people, or probably robots, advertise products for sale.
Often, these are not related to machine work.

Moderation: This is not a moderated group, but a committee of posters (not
less than five, but not more than 15) can agree by votes on the list to
allow a person to continue posting. If the committee rules against the
poster, there is no enforcement mechanism.