Just the other day I was talking about the fact I did a majority of my reading from online sources. One problem though is when I find something interesting but haven't the time to read it at that moment. Also, some long articles require additional time to properly digest. Making an actual bookmark is too much of a hassle, so generally that sort of information used to remain lost. Later, I'd often wish I could re-locate it.
Now, I use Read It Later. I use it on my phone, tablet, PC, and notebook. I can go though Google News or News360 and collect an enormous wad of interesting articles from all kinds of different sources. On my Windows machines, I run a Chrome extension and just click from the browser itself. Because all the saved pages are synced between devices, the list is always current. It works well because the files themselves are actually copied to the devices. So, if on a plane, for example, each article can still be read in its entirety.
Read It Later has been one of the most useful finds I've made recently. The photo above was liberated from the Android Market. I think I even paid $2.99 there for the pro version of the app! (That was my way of saying thanks to the developer.)