This question already has an answer here:
Is there any application that can read Stack Overflow's data dumps while I'm not connected to the Internet?
I mean an offline reader similar to WikiTaxi.
I did some initial work on the Stack Exchange Data Dump Viewer, although lack of interest kind of killed the project. Here is a screenshot:
It is capable of at least viewing questions and answers and performing primitive searches. Other than that, it doesn't do too much.
You can already use your favorite feedreader for this... as long as it has offline reading capabilities of course...
Another option is to use instapaper for this, although that would mean manually going over a lot of content first to queue it into your personal instapaper (using the "read later" button).