Planet Karen

Menage a 3 (NSFW)

Freefall

Red Meat

Wapsi Square

Girl Genius

SMBC (NSFW)

Cyanide & Happiness (NSFW)

Misfile

Kawaii Not

xkcd

Gunnerkrigg Court

Sequential Art

Namesake

Skin Horse

Two Lumps

Dresden Codak

El Goonish Shive

Megatokyo

Order of the Stick

Indexed

Myths RETOLD (NSFW)

Darwin Carmichael is Going to Hell

Sailor Twain or The Mermaid in the Hudson

Mahou Shounen Fight!

Bad Machinery

Atomic Laundromat

Hark! a Vagrant

The Intrepid Girlbot

Power Nap

Sinfest

Widdershins

Schlock Mercenary

Kagerou

Questionable Content (NSFW)

TwoKinds

Sister Claire

Eerie Cuties

Magick Chicks

Scenes From A Multiverse

Unsounded

Springiette

Yet Another Fantasy Gamer Comic (NSFW)

Does Not Play Well With Others (NSFW)

Hey Pais

Precocious

Fragile

The Straight Dope

the physics arXiv blog

Not Exactly Rocket Science

Cosmic Variance

The Loom

Tetrapod Zoology

Laelaps

Astronomy Picture of the Day

systemic

SGVY

Perry Bible Fellowship

Kukuburi

Nightingale

Hanna Is Not A Boy's Name

Keychain of Creation

fredart, by the artist of Megatokyo