Instapaper Free is another very confusing app for the iPhone. It's not confusing in the sense that it's hard to use, it's just confusing as to why you would need to use it. The entire app is focused around you bookmarking websites from your main computer and then simply loading up this app and reading them from your iPhone.
Now, if you think about it, with an iPhone, there isn't really any place you'll find yourself without some sort of reception. With an iPod Touch, it's a little more likely. This app updates with the bookmarks you've made from your computer and keeps them loaded in the app so you can read them even if you're not receiving any sort of connection. What you're reading is almost like an RSS feed version, but can also load up a web viewer version as well.
If you are the type of person who reads a lot of different websites on their iPhone or iPod Touch in areas where you can't get cell service, then this might be the perfect app for you. But it is becoming more and more rare that there are any places without cell signal or WiFi nearby.
The app is completely free for use on the iPhone, iPod Touch, and your computer. It does require you to register your information so that it can sync the accounts together, but besides that it's very simple and easy to use. You can even load up the full version of that page directly from the app itself. The biggest advantage that this app has is that it does create a sort of de.lic.ious type service, sharing all your bookmarks in one place.