MangaBabylon
The website has not received maintenance or traffic for some time and has been taken down. If you would like to contact the developer (maybe encourage her to get the site online again), email mangababylon@gmail.com.
Manga Babylon was a prototype website for studying language by reading manga. Users could study a language by reading manga in that language. If a user gets stumped, they just click on the text to see the text in their native language. New mangas and translations are user-submitted. Users also gain valuable practice by translating to or from their study language, or revising translations with wiki-style edits. MangaBabylon could easily support any number of language options. Below are a few screenshots from the prototype in development.
Wiki-style translation revisions:
Batch image upload for new content:
There was a translation editor with rich formatting options. The leftmost pane in this screenshot is how it would have been rendered in the comic reader.