It's been slightly over a year since I got my Kindle and I've really had a great time with it - I pretty much carry it everywhere and I almost always have something to read. Almost. I do buy books from Amazon via their built-in whispernet service which downloads $10 ebooks in 20 or so seconds and I receive the Wall Street Journal daily (except Sundays).
I really like the fact that I can convert pdfs, html, txt, and even word docs to the Mobipocket format that the Amazon reader accepts via the Mobipocket Creator software. That takes time, though, to find and even format the documents into HTML (that's what the mobipocket "mobi" format is) that's readable and flows correctly. Sure, you can accept all the default settings and go, but PDFs tend to come out strangely. Lazy as I am, this leaves me with Amazon-sourced info.
Recently, I've wanted to have more than just the Amazon-offered publications. One of my favorites, Foreign Affairs, doesn't come in a digital format (I've asked), so I get my subscription bimonthly and carry it around for a while. Since most articles on the web (even this one) have a "print" format, I figured it's time to whip up a quick web page to prc (that's Amazon's synonym extension for "mobi") converter
It's a Windows UI ontop of Mobipocket's mobigen.exe (their command-line converter).
Once the mobigen.exe is downloaded and extracted, using KindleConverter is straightforward - set the mobigen.exe location in the preferences, point to a url, such as http://www.foreignaffairs.org/20070701faessay86401/barack-obama/renewing-american-leadership.html?mode=print, and convert.
KindleConverter.zip (Read Me)
As always, use with care and note the copyright usage of the sites whose articles you convert.