YELPER
Noun
Yelper (plural Yelpers)
(internet) A user of Yelp, an Internet service that publishes crowdsourced reviews of local businesses.
Etymology
Noun
yelper (plural yelpers)
One who yelps.
(UK, dialect) The avocet (so-called from its sharp, shrill cry).
(US, dialect) A bird, the tattler.
Source: Wiktionary
Yelp"er, n.
Definition: An animal that yelps, or makes a yelping noise. Specifically:
(Zoöl.)
(a) The avocet; -- so called from its sharp, shrill cry. [Prov. Eng.]
(b) The tattler. [Local, U. S.]
Source: Webster’s Unabridged Dictionary 1913 Edition