I am a comic artist whose comic has been in danger of going down several times due to bandwidth theft -- the nonauthorized use of bandwidth that I have to pay for to keep the comic up.
I guess that'S one of the unadvertised features of icomic -- the artist foots the bill completely for your use, and cannot regain any of his/her money back from the banner ads/merchandise that this app skips. So not only are you pulling a comic off his site, but also money from his wallet too.
I should also add that my permission was never asked for to leech my site with these kinds of apps.
If you love comics and respect the rights (and wallets) of the comic creators, you won't use these kinds of apps.