We're discussing print this month, which is an interesting topic for webcomics. Once, it was the goal. Everyone who was doing the web had an eye to print -- the early successes, like
User Friendly,
Sluggy Freelance, and
Kevin and Kell all moved into print collections as a matter of course.
Plan 9 Publishing became the earliest resource for webcomics to bridge into dead trees, and it remains a vibrant publisher of comics and cartoons from both the web and print sides of the aisle.
Derek Kirk Kim is perhaps the most successful example of a person who has bridged from the web to a print collection, with the clear and obvious exception of
Megatokyo, which has transformed itself from a webcomic with collections available in print to a manga produced by Dark Horse that happens to put up teaser pages in sequential order on a website.