Koreader prompts to open up wifi when you do OTA update and when you search Wikipedia. There is also Evernote plugin and probably more thingies that require internet.
But why not a webbrowser when Koreader already has a text editor and a terminal emulator? The browser could be yet another extension/plugin, e.g. compile some version of w3m to run in the terminal emulator and include it in the bundle.
|