I use Google Reader a lot, and find it very convenient for reading things offline. One feature missing is support for adding articles/pages you wish to read later. What I'd like to do is occasionally mark a web page to read later, and have it show up in my Google Reader feeds.
I know there are a few services that set out to do the "mark to read later" part of this (Instapaper comes to mind), but so far I have not been able to find one which offers a feed that I can subscribe to in Google Reader. (Instapaper has a feed, but it only contains links to actual articles rather than their content.)
How can I set something like this up in Google Reader? Is there an Instapaper-like service out there that doesn't silo in the articles?