This article is from the Tolkien Newsgroups FAQ, by Steuard Jensen sbjensen@midway.uchicago.edu with numerous contributions by others.
By and large, the participants in the Tolkien newsgroups try to
judge others based on their ideas rather than on details of grammar and
posting style. However, there are a few types of simple mistakes that
tend to cause some level of bias and annoyance among many group
members, which in turn can distract them from your real message. Most
of these are covered in the "Netiquette" section below.
One common mistake of this type that is not related to netiquette is
confusing the singular and plural forms of common Elvish words. On the
Tolkien newsgroups, these words are so familiar that the phrase "Manwe
is a Valar" sounds just as jarring and strange as "Finrod is an Elves."
To reduce this problem, a list of some of the most commonly confused
singular/plural pairs is given below. Note the patterns!
Singular: Vala Maia Elda Noldo Sinda Teler Istar Adan Plural: Valar Maiar Eldar Noldor Sindar Teleri Istari Edain
 
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