noun
summary site; aggregation site
A website that collects and summarizes content from online discussion threads, blogs, or social media. Common in Japanese internet culture.
See also: まとめる
あのまとめサイトで話題のスレッドを読んだ。
I read the trending thread on that summary site.
まとめサイトは2ちゃんねるの情報をよく引用する。
Summary sites often quote information from 2channel.