The signs as things Tumblr generally likes:

Aries: Polaroids

Taurus: POC Appreciation

Gemini: Memes

Cancer: Being Emo

Leo: Attractive

Virgo: Text Posts

Libra: Color Palettes

Scorpio: Bands

Sagittarius: Space

Capricorn: Sassy replies to anon hate

Aquarius: Aliens

Pisces:  Parks and Rec