Not mentioned on this list, Twitter is also a great place for reading practice in Japanese. Just search your interest in Japanese, and follow who looks interesting!

Topics to try:
Haiku: #俳句
Games: #ゲーム
Manga: #漫画
Anime: #アニメ
Science: #科学
Wise sayings: #名言

Language model for classical Japanese is hard because in one page it can be like this.
Red: Kanji and hiragana together but mostly hiragana.
Green: Manyogana is kanji text but only take phonetic not meaning of each character.
Blue: Classical Chinese. All kanji.

Twitter feed video.