1. What do you hate most about webcomics?
Blandness and no insight. I don't like stuff that keeps it way too safe for the author. Non-jokes, dependance on clichés from animés and videogames, Mary Sue-like self inserts, cardboard-cutout characterization, and such.
I mentioned "no insight" as a turn-off, but I'm also adding "way too much insight" as a negative here. Keep the soapbox propaganda away, I'm here to read comics, not to be lectured about the real world or what have you.
2. How would you prefer to read webcomics?
By page, although if I'm not up to date with a comic, I'll binge-read it all the way to its latest release.
3. What would get you to subscribe to a webcomic's updates?
A through-and-through solid execution. The concept doesn't have to be the hypest shit of all time, it's just has to be well made.
4. If your favorite webcomic creator was giving away something for free to his readers/subscribers, what would you like that something to be?
A wallpaper, maybe. I don't go reading comics for freebies, anyways.
5. If you were getting 1 or 2 emails a month from creators you follow, what DON'T you want them to email you about?
Memes.
6. What DO you want them to email you about?
I dunno. Only really urgent stuff.
BONUS QUESTION: What if the artist was coming out with a new book/comic series, or was starting a Kickstarter campaign, or something similar, how would you prefer to find out about it?
Through the page itself (but more especifically, its RSS feed -- as long as your site has one, we're good).