Citations:memesmith

Noun: "a person who creates or enjoys Internet memes"

 * 2015, Darryn King, "Ermahgerddon: The Untold Story of the Ermahgerd Girl", Vanity Fair, 15 October 2015:
 * Pictures of celebrities and others captured in awkward freeze-framed expressions got the Ermahgerd treatment too—practicing memesmiths pouncing.