I thought this post by Novil of Sandra and Woo was a pretty good overview of issues with hosting, particularly as a webcomic grows its readership. There's also a pretty good forum on webhosts at the Comicpress site.
UPDATE: A long thread at ComixTalk from 2006 and renewed in 2008 actually shows up pretty high on the Googleplex results. No offense but the fact that Drunk Duck is still around isn't always on my mind — how has their performance as a webhost been this year? I also set up a SmackJeeves account — that's been around awhile too but would love to hear updated views on its performance this year.