Hi guys just jail broke my ipod touch a couple of months ago and found this great app for reading manga on your iphone/touch its called icomic"i'm sure most ppl should know about it" the download address is http://code.google.com/p/iphonecomic/ once you've download the file ssh to your device via Wifi or cable
ps: almost all the manga on the site work on the app so just drag the zip files into the correct folder

ps: if you iphone is not jail broken you can download the app from itunes for $1.99 i think