New plan: I'll add one per day until my entire reading list is listed. This could take awhile, as I read entirely too many webcomics. Here are five semi-random ones to get started.
The Awakened - Just did a reboot in January
Daily Grind - The art is eyebleed quality, but the writing makes up for it
Enjuhneer
The Fancy Adventures of Jack Cannon
The Intrepid Girlbot
First up in the daily listing is
Academicon Ex Virtus. It's rather new- only 19 pages so far- and I'm not yet sure what I think of it.
Adventures of Superhero Girl
I just added
Alembric Grimoire to my reading list.
Altermeta
I'd like to note that I'm skipping comics that a) haven't updated lately or b) I've fallen behind on.
Archipelago
Ascension
I just discovered
Aspect the other day.
There were a lot less under "A" than I expected.
Black Rose
Blade Bunny
Blank It
Back-tracking a bit in my list (May 27th) because
Bookwyrms just shocked me yesterday by updating after almost five years of hiatus.
Broken Windmills
I'm flying through my list much faster than expected; I've already hit the C's.
A Celestial Story would be worth reading for the art alone.
Cerintha
You get a two-for-one today, since
Cherry is a spin-off of
Footloose
Chirault is on hiatus until the creator is done with finals. EDIT: Creator is done with their finals.
Cleopatra in Space is quite fun. The guy who makes this used to do
Cow and Buffalo which is now on (most likely permanent) hiatus.
Cold Iron Badge
Crimson Flag
Dan and Mab's Furry Adventures Yes, the name is... awkward at best, but the comic's actually pretty good. It's definitely in my top 25ish.
Dawn of Time is currently going all timey-wimey again. It's quite a fun read.
Doctor Cat
Dragon Mango
Dragonaur
Dreamkeepers Prelude Prelude to a for-money-type-comic called, oddly enough, Dreamkeepers
dream*scar Hooray for beautifully drawn urban fantasy!
Drive - Nothing whatsoever to do with cars
Edemia I have no explanation.
Ekwara
The End
Even in Arcadia
Everblue
FanFyria
Firefly Cross
Ginger's Bread I'm rather surprised this one isn't already on the list.
Godspawn Chronicles
Good Fortunes
Great
Grrl Power
I'm rather surprised, but I don't have anything to add to H.
Inner Space
I hereby decree that Ursula Vernon is an exception to my rule that they have to be currently updating in order for me to list them. Because, well, Ursula Vernon.
Irrational Fears by Ursula Vernon
The Jupiter Palladium
Knifestone
Lemuria
Lightning Made of Owls
Little Creature by Ursula Vernon
Little Creature and the Redcap by Ursula Vernon
MadWillow
Magpie Luck
Maximumble
Minion
Monsterhood
Monster Pulse just started yesterday. Rather convenient timing as far as this list goes.
Moon Town
Nedroid isn't on there already? That surprises me, given how popular it seems to be around here.
NPC Comic
One Question
Panthera
The Pig's Ear
Precocious
I would list Real Life Fiction here, but the comic's creator has already beaten me to that, later in the thread.
Red Tails
Roza
Runewriters
Sfeer Theory The site carries a 15 and older tag, but nothing has shown up yet to warrant said tag. I'm not sure if you want to tag this with NSFW or not, but thought I should bring it up.
Skin Deep is another that I'm surprised to find missing.
Sombulus
Special School
Terebinth is done by the same guy who does Daily Grind, and carries the same warning that that does; the art is painful, but the writing is worth it.
Those Destined was officially abandoned back in '08, but, nonetheless, ranks amongst my favorite webcomics to this day. I still miss it

, and thus I make an exception for it from my rule requiring a recent update.
To Prevent World Peace
Transpose Operator
Side notes:
The proper name for what's listed as Sins is Sins Venials. The link is correct though. To be more accurate, Sins Venials is the sequel to Sins and is the comic currently running on that site. Sins, the original comic, is available for free download
here.
Starslip Crisis was long ago renamed to Starslip.
The proper name of the comic is The Adventures of Dr McNinja, not Dr. McNinja.