Tumblr Pixels:

• meido
• soup
• shiba
• Purinpuu
• Engram Pixel
• Pixel Diary
• Pixelian
• Cuchuffli
• Wakomeii
• Pixeliette
• Emoji-kon
• Pixels Masterpost and more
• Pixels

Japanese websites:

• Nanairo Mikan
• Nanos
• Pikoinu
• Puni
• Collet