JapaneseWikipedia has an article on:

2ちゃんねらー

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• (shortening)ねらー(nerā)
• (shortening)ちゃんねらー(channerā)

2(に)ちゃんねらー• (Ni-channerā) 

1. (Internetslang) A member of the online2channel community.

• English:4channer,channer

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