Piperka Reader uses Piperka's web comic archive to display web comic archives in an embedded form. It offers a unified navigation interface, preloads subsequent pages when reading them in order and allows updating bookmarks on Piperka directly.
This feature is still under development. Hopefully the buttons on the Reader bar are self-explanatory enough. The Reader won't know it if you navigate away within the embedded comic. More options for controlling how the content is displayed are available from a menu available in the top left corner.
To try it out, you'll need to select a comic. Go back to the main site and select Reader from a comic's info page.
Click "Archive" to see a list of comic's pages. Clicking a row there takes you that page.
Select a comic by clicking "My Comics" button. You can move your bookmark in the archive dialog by clicking an already selected row. The "Next" button automatically updates the bookmark if the "autoupdate" option is selected.